12640288915 has 16 divisors (see below), whose sum is σ = 15430383360. Its totient is φ = 9937650400.

The previous prime is 12640288879. The next prime is 12640288937. The reversal of 12640288915 is 51988204621.

It is not a de Polignac number, because 12640288915 - 2¹⁷ = 12640157843 is a prime.

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, 1407690 + ... + 1416640.

It is an arithmetic number, because the mean of its divisors is an integer number (964398960).

Almost surely, 2^12640288915 is an apocalyptic number.

12640288915 is a deficient number, since it is larger than the sum of its proper divisors (2790094445).

12640288915 is an equidigital number, since it uses as much as digits as its factorization.

12640288915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13802.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 12640288915 in words is "twelve billion, six hundred forty million, two hundred eighty-eight thousand, nine hundred fifteen".