72670474818 has 24 divisors (see below), whose sum is σ = 162882099900. Its totient is φ = 23388198624.

The previous prime is 72670474813. The next prime is 72670474859. The reversal of 72670474818 is 81847407627.

72670474818 is a `hidden beast` number, since 7 + 26 + 70 + 474 + 81 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 69646904649 + 3023570169 = 263907^2 + 54987^2 .

It is not an unprimeable number, because it can be changed into a prime (72670474813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69607213 + ... + 69608256.

Almost surely, 2^72670474818 is an apocalyptic number.

72670474818 is an abundant number, since it is smaller than the sum of its proper divisors (90211625082).

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

72670474818 is a wasteful number, since it uses less digits than its factorization.

72670474818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139215506 (or 139215503 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 54.

The spelling of 72670474818 in words is "seventy-two billion, six hundred seventy million, four hundred seventy-four thousand, eight hundred eighteen".