12539728615 has 16 divisors (see below), whose sum is σ = 16482242880. Its totient is φ = 9116101120.

The previous prime is 12539728601. The next prime is 12539728657. The reversal of 12539728615 is 51682793521.

It is not a de Polignac number, because 12539728615 - 2⁵ = 12539728583 is a prime.

It is a congruent number.

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, 2541091 + ... + 2546020.

It is an arithmetic number, because the mean of its divisors is an integer number (1030140180).

Almost surely, 2^12539728615 is an apocalyptic number.

12539728615 is a deficient number, since it is larger than the sum of its proper divisors (3942514265).

12539728615 is a wasteful number, since it uses less digits than its factorization.

12539728615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5087162.

The product of its digits is 907200, while the sum is 49.

The spelling of 12539728615 in words is "twelve billion, five hundred thirty-nine million, seven hundred twenty-eight thousand, six hundred fifteen".