>>11800785A number is a concept too, infinity can be used in the context of a number, but the rules are a bit different when dealing with infinity, similar to how the rules are a bit different when dealing with zero. Whether infinity is a number entirely depends on your mathematical definition of what a number is. If you can come up with a concise definition of a number which would work for all naturals, integers, fractions, irrationals, transcendentals, negatives, and imaginaries while also exempting infinity as technicallyt being a number, I would find that quite commendable.