Infinity is a concept. Infinity is an endless process. Infinity is not a number but 'the endless continuation of the number line'. Zero is a whole, rational, positive and negative, real and imaginary and complex number.
Similarly, is Infinity real number?
Infinity (symbol: ∞) is a concept describing something without any bound or larger than any natural number. In mathematics, "infinity" is often treated as a number (i.e., it counts or measures things: "an infinite number of terms") but it is not the same sort of number as either a natural or a real number.
Is infinity a number Yes or no?
Even though infinity is not a number, it is possible for one infinite set to contain more things than another infinite set. Mathematicians divide infinite sets into two categories, countable and uncountable sets. In a countably infinite set you can 'number' the things you are counting.
Is there a number higher than infinity?
With this definition, there is nothing (meaning: no real numbers) larger than infinity. There is another way to look at this question. It come from an idea of Georg Cantor who lived from 1845 to 1918. Cantor looked at comparing the size of two sets, that is two collections of things.