18472375656 has 96 divisors (see below), whose sum is σ = 57217867200. Its totient is φ = 5273994240.

The previous prime is 18472375639. The next prime is 18472375693. The reversal of 18472375656 is 65657327481.

18472375656 is a `hidden beast` number, since 1 + 8 + 4 + 72 + 3 + 7 + 565 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 722776 + ... + 747896.

It is an arithmetic number, because the mean of its divisors is an integer number (596019450).

Almost surely, 2^18472375656 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 18472375656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28608933600).

18472375656 is an abundant number, since it is smaller than the sum of its proper divisors (38745491544).

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

18472375656 is a wasteful number, since it uses less digits than its factorization.

18472375656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26599 (or 26592 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 18472375656 in words is "eighteen billion, four hundred seventy-two million, three hundred seventy-five thousand, six hundred fifty-six".