12686563937 has 4 divisors (see below), whose sum is σ = 12686800896. Its totient is φ = 12686326980.

The previous prime is 12686563831. The next prime is 12686563957. The reversal of 12686563937 is 73936568621.

12686563937 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12686563937 - 2²⁴ = 12669786721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12686563957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4112 + ... + 159342.

It is an arithmetic number, because the mean of its divisors is an integer number (3171700224).

Almost surely, 2^12686563937 is an apocalyptic number.

It is an amenable number.

12686563937 is a deficient number, since it is larger than the sum of its proper divisors (236959).

12686563937 is an equidigital number, since it uses as much as digits as its factorization.

12686563937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236958.

The product of its digits is 9797760, while the sum is 56.

The spelling of 12686563937 in words is "twelve billion, six hundred eighty-six million, five hundred sixty-three thousand, nine hundred thirty-seven".