12879267781 has 8 divisors (see below), whose sum is σ = 13994451200. Its totient is φ = 11807817120.

The previous prime is 12879267761. The next prime is 12879267799. The reversal of 12879267781 is 18776297821.

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 12879267781 - 2¹¹ = 12879265733 is a prime.

It is a super-2 number, since 2×12879267781² (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 (12879267761) 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, 10932576 + ... + 10933753.

It is an arithmetic number, because the mean of its divisors is an integer number (1749306400).

Almost surely, 2^12879267781 is an apocalyptic number.

It is an amenable number.

12879267781 is a deficient number, since it is larger than the sum of its proper divisors (1115183419).

12879267781 is a wasteful number, since it uses less digits than its factorization.

12879267781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21866379.

The product of its digits is 4741632, while the sum is 58.

The spelling of 12879267781 in words is "twelve billion, eight hundred seventy-nine million, two hundred sixty-seven thousand, seven hundred eighty-one".