12791138279 has 8 divisors (see below), whose sum is σ = 12813837120. Its totient is φ = 12768457696.

The previous prime is 12791138263. The next prime is 12791138291. The reversal of 12791138279 is 97283119721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12791138279 - 2⁴ = 12791138263 is a prime.

It is a super-2 number, since 2×12791138279² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12791138299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2406677 + ... + 2411985.

It is an arithmetic number, because the mean of its divisors is an integer number (1601729640).

Almost surely, 2^12791138279 is an apocalyptic number.

12791138279 is a deficient number, since it is larger than the sum of its proper divisors (22698841).

12791138279 is an equidigital number, since it uses as much as digits as its factorization.

12791138279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9129.

The product of its digits is 381024, while the sum is 50.

The spelling of 12791138279 in words is "twelve billion, seven hundred ninety-one million, one hundred thirty-eight thousand, two hundred seventy-nine".