21960702528 has 28 divisors (see below), whose sum is σ = 58104359280. Its totient is φ = 7320234112.

The previous prime is 21960702373. The next prime is 21960702539. The reversal of 21960702528 is 82520706912.

It is a self number, because there is not a number n which added to its sum of digits gives 21960702528.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57189138 + ... + 57189521.

Almost surely, 2^21960702528 is an apocalyptic number.

It is an amenable number.

21960702528 is an abundant number, since it is smaller than the sum of its proper divisors (36143656752).

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

21960702528 is a wasteful number, since it uses less digits than its factorization.

21960702528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114378674 (or 114378664 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 21960702528 in words is "twenty-one billion, nine hundred sixty million, seven hundred two thousand, five hundred twenty-eight".