12318437117 has 4 divisors (see below), whose sum is σ = 14078213856. Its totient is φ = 10558660380.

The previous prime is 12318437113. The next prime is 12318437177. The reversal of 12318437117 is 71173481321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12318437117 - 2² = 12318437113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12318437113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879888359 + ... + 879888372.

It is an arithmetic number, because the mean of its divisors is an integer number (3519553464).

Almost surely, 2^12318437117 is an apocalyptic number.

It is an amenable number.

12318437117 is a deficient number, since it is larger than the sum of its proper divisors (1759776739).

12318437117 is an equidigital number, since it uses as much as digits as its factorization.

12318437117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759776738.

The product of its digits is 28224, while the sum is 38.

It can be divided in two parts, 1231 and 8437117, that added together give a palindrome (8438348).

The spelling of 12318437117 in words is "twelve billion, three hundred eighteen million, four hundred thirty-seven thousand, one hundred seventeen".