12318564079 has 4 divisors (see below), whose sum is σ = 12319370176. Its totient is φ = 12317757984.

The previous prime is 12318564077. The next prime is 12318564109. The reversal of 12318564079 is 97046581321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97046581321 = 61511 ⋅1577711.

It is a cyclic number.

It is not a de Polignac number, because 12318564079 - 2¹ = 12318564077 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 (12318564077) 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, 379674 + ... + 410839.

It is an arithmetic number, because the mean of its divisors is an integer number (3079842544).

It is a 1-persistent number, because it is pandigital, but 2⋅12318564079 = 24637128158 is not.

Almost surely, 2^12318564079 is an apocalyptic number.

12318564079 is a deficient number, since it is larger than the sum of its proper divisors (806097).

12318564079 is an equidigital number, since it uses as much as digits as its factorization.

12318564079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806096.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 12318564079 in words is "twelve billion, three hundred eighteen million, five hundred sixty-four thousand, seventy-nine".