12641915315 has 16 divisors (see below), whose sum is σ = 15266445408. Its totient is φ = 10049500416.

The previous prime is 12641915311. The next prime is 12641915327. The reversal of 12641915315 is 51351914621.

It is a cyclic number.

It is not a de Polignac number, because 12641915315 - 2² = 12641915311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12641915311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2344052 + ... + 2349438.

It is an arithmetic number, because the mean of its divisors is an integer number (954152838).

Almost surely, 2^12641915315 is an apocalyptic number.

12641915315 is a deficient number, since it is larger than the sum of its proper divisors (2624530093).

12641915315 is a wasteful number, since it uses less digits than its factorization.

12641915315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8278.

The product of its digits is 32400, while the sum is 38.

The spelling of 12641915315 in words is "twelve billion, six hundred forty-one million, nine hundred fifteen thousand, three hundred fifteen".