12579678605 has 8 divisors (see below), whose sum is σ = 16256815512. Its totient is φ = 9289608768.

The previous prime is 12579678533. The next prime is 12579678613. The reversal of 12579678605 is 50687697521.

It can be written as a sum of positive squares in 4 ways, for example, as 20666116 + 12559012489 = 4546^2 + 112067^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12579678605 - 2²⁸ = 12311243149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96766694 + ... + 96766823.

It is an arithmetic number, because the mean of its divisors is an integer number (2032101939).

Almost surely, 2^12579678605 is an apocalyptic number.

It is an amenable number.

12579678605 is a deficient number, since it is larger than the sum of its proper divisors (3677136907).

12579678605 is a wasteful number, since it uses less digits than its factorization.

12579678605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193533535.

The product of its (nonzero) digits is 6350400, while the sum is 56.

The spelling of 12579678605 in words is "twelve billion, five hundred seventy-nine million, six hundred seventy-eight thousand, six hundred five".