12356691124579 has 4 divisors (see below), whose sum is σ = 12357419591176. Its totient is φ = 12355962657984.

The previous prime is 12356691124529. The next prime is 12356691124619. The reversal of 12356691124579 is 97542119665321.

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 12356691124579 - 2²⁷ = 12356556906851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12356691124529) 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, 364207854 + ... + 364241779.

It is an arithmetic number, because the mean of its divisors is an integer number (3089354897794).

Almost surely, 2^{12356691124579} is an apocalyptic number.

12356691124579 is a deficient number, since it is larger than the sum of its proper divisors (728466597).

12356691124579 is an equidigital number, since it uses as much as digits as its factorization.

12356691124579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728466596.

The product of its digits is 24494400, while the sum is 61.

The spelling of 12356691124579 in words is "twelve trillion, three hundred fifty-six billion, six hundred ninety-one million, one hundred twenty-four thousand, five hundred seventy-nine".