Is Number Theory Universal?

In the in like the fifties and sixties, a mathematicians developed this way of framing a lot of concepts. That is called category theory. In category theory, we think about objects and we think about relations between the objects. They are like functions. So if i can define a function that inputs a natural mber and output or imputs an integer and outputs an integer, I'm talking about number theory. The physicist olenes that reeiis, ye, no, it is. Nis. It's like a donation. No, case that mean that that's where we get all our stuff, all our knitty grady he of math, e preson