20622961128 has 64 divisors (see below), whose sum is σ = 64279365120. Its totient is φ = 5356612800.

The previous prime is 20622961043. The next prime is 20622961157. The reversal of 20622961128 is 82116922602.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 5577958 + ... + 5581653.

It is an arithmetic number, because the mean of its divisors is an integer number (1004365080).

Almost surely, 2^20622961128 is an apocalyptic number.

20622961128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20622961128 is an abundant number, since it is smaller than the sum of its proper divisors (43656403992).

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

20622961128 is a wasteful number, since it uses less digits than its factorization.

20622961128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11159638 (or 11159634 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 20622961128 in words is "twenty billion, six hundred twenty-two million, nine hundred sixty-one thousand, one hundred twenty-eight".