12796679809 has 12 divisors (see below), whose sum is σ = 13838548500. Its totient is φ = 11818208864.

The previous prime is 12796679767. The next prime is 12796679827. The reversal of 12796679809 is 90897669721.

It can be written as a sum of positive squares in 2 ways, for example, as 8940269809 + 3856410000 = 94553^2 + 62100^2 .

It is not a de Polignac number, because 12796679809 - 2¹³ = 12796671617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12796679869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401734 + ... + 432415.

It is an arithmetic number, because the mean of its divisors is an integer number (1153212375).

Almost surely, 2^12796679809 is an apocalyptic number.

It is an amenable number.

12796679809 is a deficient number, since it is larger than the sum of its proper divisors (1041868691).

12796679809 is an equidigital number, since it uses as much as digits as its factorization.

12796679809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834224 (or 834201 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 64.

The spelling of 12796679809 in words is "twelve billion, seven hundred ninety-six million, six hundred seventy-nine thousand, eight hundred nine".