The Great Pyramid is approximately 40 stories tall. But keep in mind that this is an approximation. The determination of the exact number of stories depends on various factors such as the height of each story considered and the specific way the measurement is made.
I don't have the precise page count for you. You might need to check the specific copy or look it up on the publisher's website. But typically, graphic novels like this can range from 150 to 400 pages or so.
It varies depending on the edition and printing. You could check with your local bookstore or search online for specific details about the number of pages.