12815418372 has 48 divisors (see below), whose sum is σ = 30598186752. Its totient is φ = 4172796160.

The previous prime is 12815418359. The next prime is 12815418389. The reversal of 12815418372 is 27381451821.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272038 + ... + 315650.

It is an arithmetic number, because the mean of its divisors is an integer number (637462224).

Almost surely, 2^12815418372 is an apocalyptic number.

12815418372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12815418372 is an abundant number, since it is smaller than the sum of its proper divisors (17782768380).

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

12815418372 is a wasteful number, since it uses less digits than its factorization.

12815418372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44188 (or 44186 counting only the distinct ones).

The product of its digits is 107520, while the sum is 42.

The spelling of 12815418372 in words is "twelve billion, eight hundred fifteen million, four hundred eighteen thousand, three hundred seventy-two".