12668991279 has 8 divisors (see below), whose sum is σ = 19305129600. Its totient is φ = 7239423576.

The previous prime is 12668991163. The next prime is 12668991281. The reversal of 12668991279 is 97219986621.

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

It is not a de Polignac number, because 12668991279 - 2⁷ = 12668991151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12668993279) 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, 301642629 + ... + 301642670.

It is an arithmetic number, because the mean of its divisors is an integer number (2413141200).

Almost surely, 2^12668991279 is an apocalyptic number.

12668991279 is a deficient number, since it is larger than the sum of its proper divisors (6636138321).

12668991279 is an equidigital number, since it uses as much as digits as its factorization.

12668991279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603285309.

The product of its digits is 5878656, while the sum is 60.

The spelling of 12668991279 in words is "twelve billion, six hundred sixty-eight million, nine hundred ninety-one thousand, two hundred seventy-nine".