18916506960972 has 48 divisors (see below), whose sum is σ = 44220655070592. Its totient is φ = 6293770623360.

The previous prime is 18916506960971. The next prime is 18916506960991. The reversal of 18916506960972 is 27906960561981.

It is a super-2 number, since 2×18916506960972² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (69) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18916506960897 and 18916506960906.

It is not an unprimeable number, because it can be changed into a prime (18916506960971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64488583 + ... + 64781249.

It is an arithmetic number, because the mean of its divisors is an integer number (921263647304).

Almost surely, 2^{18916506960972} is an apocalyptic number.

18916506960972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18916506960972 is an abundant number, since it is smaller than the sum of its proper divisors (25304148109620).

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

18916506960972 is a wasteful number, since it uses less digits than its factorization.

18916506960972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302678 (or 302676 counting only the distinct ones).

The product of its (nonzero) digits is 88179840, while the sum is 69.

The spelling of 18916506960972 in words is "eighteen trillion, nine hundred sixteen billion, five hundred six million, nine hundred sixty thousand, nine hundred seventy-two".