12797494979 has 4 divisors (see below), whose sum is σ = 12898262784. Its totient is φ = 12696727176.

The previous prime is 12797494961. The next prime is 12797494987. The reversal of 12797494979 is 97949479721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12797494979 - 2²⁸ = 12529059523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12797494909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50383712 + ... + 50383965.

It is an arithmetic number, because the mean of its divisors is an integer number (3224565696).

Almost surely, 2^12797494979 is an apocalyptic number.

12797494979 is a deficient number, since it is larger than the sum of its proper divisors (100767805).

12797494979 is a wasteful number, since it uses less digits than its factorization.

12797494979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100767804.

The product of its digits is 72013536, while the sum is 68.

The spelling of 12797494979 in words is "twelve billion, seven hundred ninety-seven million, four hundred ninety-four thousand, nine hundred seventy-nine".