12779507913 has 8 divisors (see below), whose sum is σ = 17042107776. Its totient is φ = 8518290000.

The previous prime is 12779507857. The next prime is 12779507929. The reversal of 12779507913 is 31970597721.

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

It is not a de Polignac number, because 12779507913 - 2¹² = 12779503817 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12779507513) 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, 323713 + ... + 361038.

It is an arithmetic number, because the mean of its divisors is an integer number (2130263472).

Almost surely, 2^12779507913 is an apocalyptic number.

It is an amenable number.

12779507913 is a deficient number, since it is larger than the sum of its proper divisors (4262599863).

12779507913 is an equidigital number, since it uses as much as digits as its factorization.

12779507913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690975.

The product of its (nonzero) digits is 833490, while the sum is 51.

The spelling of 12779507913 in words is "twelve billion, seven hundred seventy-nine million, five hundred seven thousand, nine hundred thirteen".