12879049731 has 16 divisors (see below), whose sum is σ = 17228883840. Its totient is φ = 8557660800.

The previous prime is 12879049723. The next prime is 12879049753. The reversal of 12879049731 is 13794097821.

It is not a de Polignac number, because 12879049731 - 2³ = 12879049723 is a prime.

It is a super-2 number, since 2×12879049731² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12879049531) 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, 1780440 + ... + 1787658.

It is an arithmetic number, because the mean of its divisors is an integer number (1076805240).

Almost surely, 2^12879049731 is an apocalyptic number.

12879049731 is a deficient number, since it is larger than the sum of its proper divisors (4349834109).

12879049731 is a wasteful number, since it uses less digits than its factorization.

12879049731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9106.

The product of its (nonzero) digits is 762048, while the sum is 51.

The spelling of 12879049731 in words is "twelve billion, eight hundred seventy-nine million, forty-nine thousand, seven hundred thirty-one".