12315651939 has 8 divisors (see below), whose sum is σ = 18245410320. Its totient is φ = 8210434608.

The previous prime is 12315651919. The next prime is 12315652001. The reversal of 12315651939 is 93915651321.

12315651939 is a `hidden beast` number, since 12 + 31 + 565 + 19 + 39 = 666.

It is not a de Polignac number, because 12315651939 - 2⁷ = 12315651811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12315651894 and 12315651903.

It is not an unprimeable number, because it can be changed into a prime (12315651919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228067602 + ... + 228067655.

It is an arithmetic number, because the mean of its divisors is an integer number (2280676290).

Almost surely, 2^12315651939 is an apocalyptic number.

12315651939 is a deficient number, since it is larger than the sum of its proper divisors (5929758381).

12315651939 is an equidigital number, since it uses as much as digits as its factorization.

12315651939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456135266 (or 456135260 counting only the distinct ones).

The product of its digits is 218700, while the sum is 45.

The spelling of 12315651939 in words is "twelve billion, three hundred fifteen million, six hundred fifty-one thousand, nine hundred thirty-nine".