18056913801264 has 480 divisors, whose sum is σ = 56959927664640. Its totient is φ = 5504632390656.

The previous prime is 18056913801239. The next prime is 18056913801389. The reversal of 18056913801264 is 46210831965081.

It is a happy number.

18056913801264 is a `hidden beast` number, since 1 + 8 + 0 + 56 + 91 + 380 + 126 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 18056913801264.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6207256642 + ... + 6207259550.

It is an arithmetic number, because the mean of its divisors is an integer number (118666515968).

Almost surely, 2^{18056913801264} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18056913801264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28479963832320).

18056913801264 is an abundant number, since it is smaller than the sum of its proper divisors (38903013863376).

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

18056913801264 is a wasteful number, since it uses less digits than its factorization.

18056913801264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4039 (or 4021 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 18056913801264 in words is "eighteen trillion, fifty-six billion, nine hundred thirteen million, eight hundred one thousand, two hundred sixty-four".