squillion

noun

1. (slang)A very large, unspecified number (of).

   “The word million was adequate for most things, billion came in handy on occasions, but if you wanted to use a word for a very, very large number, you just had to invent one. Anna invented one: a squillion.”

   “You thinks to yourself, ‘There’s a billion, trillion squillion of them, no one’s going to notice.’ But that’s where professionalism comes in, sort of thing.”

   “It'll just take a squillion times longer than the age of the universe to happen.”

   “I just ran the numbers and got 1.7 squillion, myself.”