12746878579 has 16 divisors (see below), whose sum is σ = 13822788672. Its totient is φ = 11709554688.

The previous prime is 12746878537. The next prime is 12746878583. The reversal of 12746878579 is 97587864721.

It is a cyclic number.

It is not a de Polignac number, because 12746878579 - 2²³ = 12738489971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12746878579.

It is not an unprimeable number, because it can be changed into a prime (12746878519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137242 + ... + 210544.

It is an arithmetic number, because the mean of its divisors is an integer number (863924292).

Almost surely, 2^12746878579 is an apocalyptic number.

12746878579 is a deficient number, since it is larger than the sum of its proper divisors (1075910093).

12746878579 is a wasteful number, since it uses less digits than its factorization.

12746878579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73566.

The product of its digits is 47416320, while the sum is 64.

The spelling of 12746878579 in words is "twelve billion, seven hundred forty-six million, eight hundred seventy-eight thousand, five hundred seventy-nine".