diff --git a/lisp/isearch.el b/lisp/isearch.el
index 0624858993..37f9b50724 100644
--- a/lisp/isearch.el
+++ b/lisp/isearch.el
@@ -452,17 +452,17 @@ lazy-count
   :group 'isearch
   :group 'matching)
 
-(defcustom lazy-count-prefix-format "%s/%s "
+(defcustom lazy-count-prefix-format "%s/%s%s "
   "Format of the current/total number of matches for the prompt prefix."
   :type '(choice (const :tag "No prefix" nil)
-                 (string :tag "Prefix format string" "%s/%s "))
+                 (string :tag "Prefix format string" "%s/%s%s "))
   :group 'lazy-count
   :version "27.1")
 
 (defcustom lazy-count-suffix-format nil
   "Format of the current/total number of matches for the prompt suffix."
   :type '(choice (const :tag "No suffix" nil)
-                 (string :tag "Suffix format string" " [%s of %s]"))
+                 (string :tag "Suffix format string" " [%s of %s]%s"))
   :group 'lazy-count
   :version "27.1")
 
@@ -1277,6 +1277,7 @@ isearch-mode
 
 	isearch-lazy-count-current nil
 	isearch-lazy-count-total nil
+	isearch-lazy-count-invisible nil
 
 	;; Save the original value of `minibuffer-message-timeout', and
 	;; set it to nil so that isearch's messages don't get timed out.
@@ -3528,7 +3533,11 @@ isearch-lazy-count-format
                     (- isearch-lazy-count-total
                        isearch-lazy-count-current
                        -1)))
-                (or isearch-lazy-count-total "?"))
+                (or isearch-lazy-count-total "?")
+                (if isearch-lazy-count-invisible
+                    ;; "invisible" means "unreachable", "intangible"
+                    (format " (invisible %s)" isearch-lazy-count-invisible)
+                  ""))
       "")))
 
 
@@ -4007,6 +4017,7 @@ isearch-lazy-highlight-forward
 (defvar isearch-lazy-highlight-error nil)
 (defvar isearch-lazy-count-current nil)
 (defvar isearch-lazy-count-total nil)
+(defvar isearch-lazy-count-invisible nil)
 (defvar isearch-lazy-count-hash (make-hash-table))
 (defvar lazy-count-update-hook nil
   "Hook run after new lazy count results are computed.")
@@ -4085,7 +4096,8 @@ isearch-lazy-highlight-new-loop
         ;; Reset old counter before going to count new numbers
         (clrhash isearch-lazy-count-hash)
         (setq isearch-lazy-count-current nil
-              isearch-lazy-count-total nil)
+              isearch-lazy-count-total nil
+              isearch-lazy-count-invisible nil)
         ;; Delay updating the message if possible, to avoid flicker
         (when (string-equal isearch-string "")
           (when (and isearch-mode (null isearch-message-function))
@@ -4327,11 +4349,14 @@ isearch-lazy-highlight-buffer-update
 				(setq found nil)
 			      (forward-char -1)))
 			(when isearch-lazy-count
-			  (setq isearch-lazy-count-total
-				(1+ (or isearch-lazy-count-total 0)))
-			  (puthash (if isearch-lazy-highlight-forward me mb)
-				   isearch-lazy-count-total
-				   isearch-lazy-count-hash))
+			  (if (and search-invisible (invisible-p (get-text-property (point) 'invisible)))
+			      (setq isearch-lazy-count-invisible
+				    (1+ (or isearch-lazy-count-invisible 0)))
+			    (setq isearch-lazy-count-total
+				  (1+ (or isearch-lazy-count-total 0)))
+			    (puthash (if isearch-lazy-highlight-forward me mb)
+				     isearch-lazy-count-total
+				     isearch-lazy-count-hash)))
 			;; Don't highlight the match when this loop is used
 			;; only to count matches or when matches were already
 			;; highlighted within the current window boundaries