12315018916 has 12 divisors (see below), whose sum is σ = 21904583260. Its totient is φ = 6056566560.

The previous prime is 12315018871. The next prime is 12315018953. The reversal of 12315018916 is 61981051321.

It can be written as a sum of positive squares in 2 ways, for example, as 6319614016 + 5995404900 = 79496^2 + 77430^2 .

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, 25235451 + ... + 25235938.

Almost surely, 2^12315018916 is an apocalyptic number.

It is an amenable number.

12315018916 is a deficient number, since it is larger than the sum of its proper divisors (9589564344).

12315018916 is a wasteful number, since it uses less digits than its factorization.

12315018916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50471454 (or 50471452 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 12315018916 in words is "twelve billion, three hundred fifteen million, eighteen thousand, nine hundred sixteen".