12887968137 has 16 divisors (see below), whose sum is σ = 18753175488. Its totient is φ = 7807956480.

The previous prime is 12887968129. The next prime is 12887968139. The reversal of 12887968137 is 73186978821.

It is not a de Polignac number, because 12887968137 - 2³ = 12887968129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12887968139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17553 + ... + 161505.

It is an arithmetic number, because the mean of its divisors is an integer number (1172073468).

Almost surely, 2^12887968137 is an apocalyptic number.

It is an amenable number.

12887968137 is a deficient number, since it is larger than the sum of its proper divisors (5865207351).

12887968137 is a wasteful number, since it uses less digits than its factorization.

12887968137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146680.

The product of its digits is 8128512, while the sum is 60.

The spelling of 12887968137 in words is "twelve billion, eight hundred eighty-seven million, nine hundred sixty-eight thousand, one hundred thirty-seven".