21753120280268 has 48 divisors (see below), whose sum is σ = 44808062148864. Its totient is φ = 9144502456320.

The previous prime is 21753120280181. The next prime is 21753120280301. The reversal of 21753120280268 is 86208202135712.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396869405 + ... + 396924212.

It is an arithmetic number, because the mean of its divisors is an integer number (933501294768).

Almost surely, 2^{21753120280268} is an apocalyptic number.

It is an amenable number.

21753120280268 is an abundant number, since it is smaller than the sum of its proper divisors (23054941868596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21753120280268 is a wasteful number, since it uses less digits than its factorization.

21753120280268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793793682 (or 793793680 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 21753120280268 in words is "twenty-one trillion, seven hundred fifty-three billion, one hundred twenty million, two hundred eighty thousand, two hundred sixty-eight".