12665604315 has 64 divisors (see below), whose sum is σ = 24958596096. Its totient is φ = 5340943872.

The previous prime is 12665604283. The next prime is 12665604319. The reversal of 12665604315 is 51340656621.

It is not a de Polignac number, because 12665604315 - 2⁵ = 12665604283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (12665604319) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3092409 + ... + 3096501.

It is an arithmetic number, because the mean of its divisors is an integer number (389978064).

Almost surely, 2^12665604315 is an apocalyptic number.

12665604315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12665604315 is a deficient number, since it is larger than the sum of its proper divisors (12292991781).

12665604315 is a wasteful number, since it uses less digits than its factorization.

12665604315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6388.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 12665604315 in words is "twelve billion, six hundred sixty-five million, six hundred four thousand, three hundred fifteen".