18412640756 has 12 divisors (see below), whose sum is σ = 32584168260. Its totient is φ = 9102878400.

The previous prime is 18412640749. The next prime is 18412640761. The reversal of 18412640756 is 65704621481.

It can be written as a sum of positive squares in 2 ways, for example, as 9421808356 + 8990832400 = 97066^2 + 94820^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25860095 + ... + 25860806.

It is an arithmetic number, because the mean of its divisors is an integer number (2715347355).

Almost surely, 2^18412640756 is an apocalyptic number.

It is an amenable number.

18412640756 is a deficient number, since it is larger than the sum of its proper divisors (14171527504).

18412640756 is a wasteful number, since it uses less digits than its factorization.

18412640756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51720994 (or 51720992 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 18412640756 in words is "eighteen billion, four hundred twelve million, six hundred forty thousand, seven hundred fifty-six".