20587988112 has 40 divisors (see below), whose sum is σ = 53413929504. Its totient is φ = 6833205504.

The previous prime is 20587988081. The next prime is 20587988123. The reversal of 20587988112 is 21188978502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 909238 + ... + 931605.

Almost surely, 2^20587988112 is an apocalyptic number.

It is an amenable number.

20587988112 is an abundant number, since it is smaller than the sum of its proper divisors (32825941392).

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

20587988112 is a wasteful number, since it uses less digits than its factorization.

20587988112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841087 (or 1841081 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 51.

The spelling of 20587988112 in words is "twenty billion, five hundred eighty-seven million, nine hundred eighty-eight thousand, one hundred twelve".