12318708637 has 2 divisors, whose sum is σ = 12318708638. Its totient is φ = 12318708636.

The previous prime is 12318708629. The next prime is 12318708683. The reversal of 12318708637 is 73680781321.

12318708637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (12318708683) can be obtained adding 12318708637 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11221376761 + 1097331876 = 105931^2 + 33126^2 .

It is a cyclic number.

It is not a de Polignac number, because 12318708637 - 2³ = 12318708629 is a prime.

It is a super-3 number, since 3×12318708637³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12318700637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159354318 + 6159354319.

It is an arithmetic number, because the mean of its divisors is an integer number (6159354319).

Almost surely, 2^12318708637 is an apocalyptic number.

It is an amenable number.

12318708637 is a deficient number, since it is larger than the sum of its proper divisors (1).

12318708637 is an equidigital number, since it uses as much as digits as its factorization.

12318708637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 12318708637 in words is "twelve billion, three hundred eighteen million, seven hundred eight thousand, six hundred thirty-seven".