20971075884 has 96 divisors (see below), whose sum is σ = 58633666560. Its totient is φ = 5758632000.

The previous prime is 20971075859. The next prime is 20971075897. The reversal of 20971075884 is 48857017902.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124092 + ... + 239459.

It is an arithmetic number, because the mean of its divisors is an integer number (610767360).

Almost surely, 2^20971075884 is an apocalyptic number.

It is an amenable number.

20971075884 is an abundant number, since it is smaller than the sum of its proper divisors (37662590676).

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

20971075884 is a wasteful number, since it uses less digits than its factorization.

20971075884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363611 (or 363609 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 51.

The spelling of 20971075884 in words is "twenty billion, nine hundred seventy-one million, seventy-five thousand, eight hundred eighty-four".