See the bottom of this page for a list of available Auto-Text tag types. I don’t think what you’re looking for is currently available.
For “Page 1 of 48” I usually do like this:
Page <PageNumber> of <TotalPages>
Then, in my Layout template file, <TotalPages> is set to a placeholder of “X”, so when I am complete with the document, I swap the “X” with the total number of pages in the document.