12318427973 has 2 divisors, whose sum is σ = 12318427974. Its totient is φ = 12318427972.

The previous prime is 12318427963. The next prime is 12318428069. The reversal of 12318427973 is 37972481321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6919411489 + 5399016484 = 83183^2 + 73478^2 .

It is a cyclic number.

It is not a de Polignac number, because 12318427973 - 2²⁰ = 12317379397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12318427903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159213986 + 6159213987.

It is an arithmetic number, because the mean of its divisors is an integer number (6159213987).

Almost surely, 2^12318427973 is an apocalyptic number.

It is an amenable number.

12318427973 is a deficient number, since it is larger than the sum of its proper divisors (1).

12318427973 is an equidigital number, since it uses as much as digits as its factorization.

12318427973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 47.

The spelling of 12318427973 in words is "twelve billion, three hundred eighteen million, four hundred twenty-seven thousand, nine hundred seventy-three".