20837136160 has 48 divisors (see below), whose sum is σ = 49385129976. Its totient is φ = 8308205568.

The previous prime is 20837136157. The next prime is 20837136167. The reversal of 20837136160 is 6163173802.

It can be written as a sum of positive squares in 4 ways, for example, as 10669237264 + 10167898896 = 103292^2 + 100836^2 .

It is not an unprimeable number, because it can be changed into a prime (20837136167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157959 + ... + 258118.

Almost surely, 2^20837136160 is an apocalyptic number.

20837136160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20837136160 is an abundant number, since it is smaller than the sum of its proper divisors (28547993816).

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

20837136160 is a wasteful number, since it uses less digits than its factorization.

20837136160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416405 (or 416397 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 20837136160 in words is "twenty billion, eight hundred thirty-seven million, one hundred thirty-six thousand, one hundred sixty".