12515001279 has 16 divisors (see below), whose sum is σ = 18205993344. Its totient is φ = 7583868000.

The previous prime is 12515001269. The next prime is 12515001319. The reversal of 12515001279 is 97210051521.

It is not a de Polignac number, because 12515001279 - 2⁷ = 12515001151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515001269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297504 + ... + 336954.

It is an arithmetic number, because the mean of its divisors is an integer number (1137874584).

Almost surely, 2^12515001279 is an apocalyptic number.

12515001279 is a deficient number, since it is larger than the sum of its proper divisors (5690992065).

12515001279 is a wasteful number, since it uses less digits than its factorization.

12515001279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49078.

The product of its (nonzero) digits is 6300, while the sum is 33.

The spelling of 12515001279 in words is "twelve billion, five hundred fifteen million, one thousand, two hundred seventy-nine".