Page numbers are typically placed on the master pages, and a document can have several master pages. Use Window > Pages to navigate to the A-Master and try deleting them from there. If that's not a option, please show a screen shot of your A-Master spread with the Pages panel and Layers panel open.
Hmmm, reconsidering the words "single page numbers". Do you mean remove page numbers off of individual body pages?
In that case, Control Alt click with the Selection tool to select the page number frames on the body pages, and press Delete. (Cmd Opt click on a Mac).
Edit: I meant to type Ctrl Shift click (Mac: Cmd Shift click). Shift, not Alt/Option.
thanks for reponse, barbbinder
unfortunately I cannot apply the CmdOpt click
That would be because I wrote the wrong command! I should have written Cmd Sh click (Win: Ctrl Alt click).
I am so sorry!
juhu, it worked!
thanks so much, and greetings from germany
Oh, I'm so glad it worked, and so glad I was still sitting here to correct the mistake. I need to enforce the rule about not responding to questions before finishing at least one cup of coffee! Thanks for understanding.
Greetings from Colorado!