12137875521 has 16 divisors (see below), whose sum is σ = 16319944704. Its totient is φ = 8023929984.

The previous prime is 12137875483. The next prime is 12137875553. The reversal of 12137875521 is 12557873121.

It is not a de Polignac number, because 12137875521 - 2¹⁸ = 12137613377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12137875021) 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, 812895 + ... + 827691.

It is an arithmetic number, because the mean of its divisors is an integer number (1019996544).

Almost surely, 2^12137875521 is an apocalyptic number.

It is an amenable number.

12137875521 is a deficient number, since it is larger than the sum of its proper divisors (4182069183).

12137875521 is a wasteful number, since it uses less digits than its factorization.

12137875521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17080.

The product of its digits is 117600, while the sum is 42.

The spelling of 12137875521 in words is "twelve billion, one hundred thirty-seven million, eight hundred seventy-five thousand, five hundred twenty-one".