Numbers That Don't Exist but Which Have Names

In the English language, we use several words that don't represent actual numbers that are used as if they did.

One such word is "umpteen," which is often used to represent some generic number in the teens, or just "a lot," as in "I've told you umpteen times to clean your room."

Another such word is "zillion," with several variants, such as "bazillion" and "gazillion." This word is used to describe an enormous number of indefinite size, as in "Why are we spending money on that program when the national debt is, like, a zillion dollars?" or in hyperbolic fashion, as in "I've told you a zillion times to clean your room."