18972113922900 has 108 divisors (see below), whose sum is σ = 59522982736672. Its totient is φ = 5054470735680.

The previous prime is 18972113922893. The next prime is 18972113922911. The reversal of 18972113922900 is 922931127981.

18972113922900 is a `hidden beast` number, since 18 + 9 + 7 + 211 + 392 + 29 + 0 + 0 = 666.

It is a super-2 number, since 2×18972113922900² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8958694 + ... + 10872093.

Almost surely, 2^{18972113922900} is an apocalyptic number.

18972113922900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18972113922900 is an abundant number, since it is smaller than the sum of its proper divisors (40550868813772).

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

18972113922900 is a wasteful number, since it uses less digits than its factorization.

18972113922900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19831870 (or 19831860 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 18972113922900 in words is "eighteen trillion, nine hundred seventy-two billion, one hundred thirteen million, nine hundred twenty-two thousand, nine hundred".