"The number" refers to a quantity or amount, but there are many synonyms to replace this common phrase. "Numerosity" is a formal term that can be used in place of "the number." Additionally, "quantity," "total," and "figure" are other options. When discussing statistics, "data point" or "data set" could be used instead of "the number." In mathematical terms, "integer," "numeral," and "digit" can all replace "the number." Some phrases that convey a similar meaning include "amount of," "numerical value," and "count." Being able to vary one's language and use synonyms can make writing more interesting and engaging.