12684364157879 has 4 divisors (see below), whose sum is σ = 12684399664584. Its totient is φ = 12684328651176.

The previous prime is 12684364157873. The next prime is 12684364157893. The reversal of 12684364157879 is 97875146348621.

12684364157879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12684364157879 - 2¹⁶ = 12684364092343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12684364157873) 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, 17211992 + ... + 17933805.

It is an arithmetic number, because the mean of its divisors is an integer number (3171099916146).

Almost surely, 2^{12684364157879} is an apocalyptic number.

12684364157879 is a deficient number, since it is larger than the sum of its proper divisors (35506705).

12684364157879 is an equidigital number, since it uses as much as digits as its factorization.

12684364157879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35506704.

The product of its digits is 487710720, while the sum is 71.

The spelling of 12684364157879 in words is "twelve trillion, six hundred eighty-four billion, three hundred sixty-four million, one hundred fifty-seven thousand, eight hundred seventy-nine".