18605966976 has 80 divisors (see below), whose sum is σ = 55371087090. Its totient is φ = 6201985536.

The previous prime is 18605966971. The next prime is 18605967041. The reversal of 18605966976 is 67966950681.

18605966976 is a `hidden beast` number, since 18 + 605 + 9 + 6 + 6 + 9 + 7 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18031118400 + 574848576 = 134280^2 + 23976^2 .

It is a super-2 number, since 2×18605966976² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18605966971) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 886911 + ... + 907646.

Almost surely, 2^18605966976 is an apocalyptic number.

18605966976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18605966976 is an abundant number, since it is smaller than the sum of its proper divisors (36765120114).

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

18605966976 is an equidigital number, since it uses as much as digits as its factorization.

18605966976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794583 (or 1794562 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The spelling of 18605966976 in words is "eighteen billion, six hundred five million, nine hundred sixty-six thousand, nine hundred seventy-six".