the answer is 7,000,000 pages
A Million Trillion Stars was created in 2007.
About 100 thousand million billion trillion
A dwarf galaxy can have a few million stars; a huge galaxy can have a trillion stars or more.
Lifetimes range from a few million to 100 trillion years
The lifetime of a star may be anything between about a million years for the more massive stars, and several trillion (several million million) years for red dwarves.
A typical galaxy may have anywhere between a few million (106) stars, and over a trillion (1012) stars. Our own Milky Way is estimated to have between 200 and 400 billion (2x1011-4x1011) stars.
There are 313 pages in The Fault in Our Stars.
Jimmy's Stars has 257 pages.
Return from the Stars has 247 pages.
Wandering Stars has 239 pages.
Anvil of Stars has 471 pages.
Imperial Stars has 155 pages.