20680172976 has 40 divisors (see below), whose sum is σ = 53452119024. Its totient is φ = 6889734400.

The previous prime is 20680172951. The next prime is 20680173049. The reversal of 20680172976 is 67927108602.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 22071 + ... + 204566.

Almost surely, 2^20680172976 is an apocalyptic number.

It is an amenable number.

20680172976 is an abundant number, since it is smaller than the sum of its proper divisors (32771946048).

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

20680172976 is a wasteful number, since it uses less digits than its factorization.

20680172976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228549 (or 228543 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 20680172976 in words is "twenty billion, six hundred eighty million, one hundred seventy-two thousand, nine hundred seventy-six".