12879745231 has 4 divisors (see below), whose sum is σ = 12908819592. Its totient is φ = 12850670872.

The previous prime is 12879745223. The next prime is 12879745261. The reversal of 12879745231 is 13254797821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12879745231 - 2³ = 12879745223 is a prime.

It is a super-2 number, since 2×12879745231² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12879745261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14536516 + ... + 14537401.

It is an arithmetic number, because the mean of its divisors is an integer number (3227204898).

Almost surely, 2^12879745231 is an apocalyptic number.

12879745231 is a deficient number, since it is larger than the sum of its proper divisors (29074361).

12879745231 is an equidigital number, since it uses as much as digits as its factorization.

12879745231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29074360.

The product of its digits is 846720, while the sum is 49.

The spelling of 12879745231 in words is "twelve billion, eight hundred seventy-nine million, seven hundred forty-five thousand, two hundred thirty-one".