Tropes about numbers, general or specific. General numbers: Cast Calculus: Choosing the right cast size and splitting traits between them.

Child Prodigy: The backstory of Charlie is that he is a math child prodigy. When he was three, he was able to multiply four-digit numbers in his head. Chuck ...

Regardless of reason, numbers are often given significance in stories, and mention of a number in a story can indicate a meaning beyond just counting out items.

On a random lark, you show them your math homework/accounting/hyper-dimensional missile schematics. Within seconds, they know what's going on.

The character is a prisoner or otherwise an inhabitant of a large bureaucratic institution, which assigns people numbers to keep track of them. (And in some ...

Looking for a good name for your work of fiction? Look no further, just find a number tangentially related to the premise and use that as the title.

An obsession or phobia regarding numbers and/or numerical order. Characters afflicted with this fixation tend to have a deep need for order and structure ...

0 - This number represents The Void, the complete absence of being. It's usually something menacing, and it's always a bad moment when there's nothing left.

In a fantasy world whose arc number is 12, there might be 12 deadly sins, 12 levels of hell, and an ice cream chain that sells 12 flavors at a time. Sometimes ...

Has two popular varieties: Using zillions, skyrillions and other such words as real (but ridiculously high) numbers. Often lampshaded.