18864687957696 has 168 divisors, whose sum is σ = 63790271427584. Its totient is φ = 5216042718720.

The previous prime is 18864687957683. The next prime is 18864687957701. The reversal of 18864687957696 is 69675978646881.

It is a happy number.

18864687957696 is a `hidden beast` number, since 1 + 8 + 8 + 6 + 468 + 7 + 9 + 57 + 6 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75338590 + ... + 75588573.

Almost surely, 2^{18864687957696} is an apocalyptic number.

18864687957696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18864687957696 is an abundant number, since it is smaller than the sum of its proper divisors (44925583469888).

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

18864687957696 is a wasteful number, since it uses less digits than its factorization.

18864687957696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150927219 (or 150927206 counting only the distinct ones).

The product of its digits is 52672757760, while the sum is 90.

The spelling of 18864687957696 in words is "eighteen trillion, eight hundred sixty-four billion, six hundred eighty-seven million, nine hundred fifty-seven thousand, six hundred ninety-six".