12793656731 has 4 divisors (see below), whose sum is σ = 13546224792. Its totient is φ = 12041088672.

The previous prime is 12793656719. The next prime is 12793656751. The reversal of 12793656731 is 13765639721.

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 12793656731 - 2³⁰ = 11719914907 is a prime.

It is a super-2 number, since 2×12793656731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12793656731.

It is not an unprimeable number, because it can be changed into a prime (12793656751) 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, 376284005 + ... + 376284038.

It is an arithmetic number, because the mean of its divisors is an integer number (3386556198).

Almost surely, 2^12793656731 is an apocalyptic number.

12793656731 is a deficient number, since it is larger than the sum of its proper divisors (752568061).

12793656731 is an equidigital number, since it uses as much as digits as its factorization.

12793656731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752568060.

The product of its digits is 1428840, while the sum is 50.

The spelling of 12793656731 in words is "twelve billion, seven hundred ninety-three million, six hundred fifty-six thousand, seven hundred thirty-one".