2 example sentences using numerousness.
Numerousness used in a sentence
Numerousness in a sentence as a noun
Do you have something whose keys really require the numerousness of 8KB of characters?
I'd argue you are also substantially underestimating the scale and numerousness of biology: your body alone has more bacterial cells than there are stars in the observable universe - all you need is one viable cell to seed an entire planet.
Numerousness definitions
noun
a large number
See also: numerosity multiplicity