12691760631 has 16 divisors (see below), whose sum is σ = 18639978240. Its totient is φ = 7617294720.

The previous prime is 12691760629. The next prime is 12691760659. The reversal of 12691760631 is 13606719621.

It is not a de Polignac number, because 12691760631 - 2¹ = 12691760629 is a prime.

It is a super-2 number, since 2×12691760631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12691760611) 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, 1863586 + ... + 1870383.

It is an arithmetic number, because the mean of its divisors is an integer number (1164998640).

Almost surely, 2^12691760631 is an apocalyptic number.

12691760631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12691760631 is a deficient number, since it is larger than the sum of its proper divisors (5948217609).

12691760631 is a wasteful number, since it uses less digits than its factorization.

12691760631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734086.

The product of its (nonzero) digits is 81648, while the sum is 42.

The spelling of 12691760631 in words is "twelve billion, six hundred ninety-one million, seven hundred sixty thousand, six hundred thirty-one".