12918079347 has 32 divisors (see below), whose sum is σ = 18776094720. Its totient is φ = 7870037760.

The previous prime is 12918079337. The next prime is 12918079399. The reversal of 12918079347 is 74397081921.

It is not a de Polignac number, because 12918079347 - 2⁸ = 12918079091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12918079347.

It is not an unprimeable number, because it can be changed into a prime (12918079337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 541393 + ... + 564749.

It is an arithmetic number, because the mean of its divisors is an integer number (586752960).

Almost surely, 2^12918079347 is an apocalyptic number.

12918079347 is a deficient number, since it is larger than the sum of its proper divisors (5858015373).

12918079347 is a wasteful number, since it uses less digits than its factorization.

12918079347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23723.

The product of its (nonzero) digits is 762048, while the sum is 51.

The spelling of 12918079347 in words is "twelve billion, nine hundred eighteen million, seventy-nine thousand, three hundred forty-seven".