12776402631 has 16 divisors (see below), whose sum is σ = 17100129024. Its totient is φ = 8485202304.

The previous prime is 12776402557. The next prime is 12776402633. The reversal of 12776402631 is 13620467721.

It is not a de Polignac number, because 12776402631 - 2¹⁰ = 12776401607 is a prime.

It is a super-2 number, since 2×12776402631² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12776402631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12776402633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 859000 + ... + 873746.

It is an arithmetic number, because the mean of its divisors is an integer number (1068758064).

Almost surely, 2^12776402631 is an apocalyptic number.

12776402631 is a deficient number, since it is larger than the sum of its proper divisors (4323726393).

12776402631 is a wasteful number, since it uses less digits than its factorization.

12776402631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15830.

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 12776402631 in words is "twelve billion, seven hundred seventy-six million, four hundred two thousand, six hundred thirty-one".