12318691997713 has 2 divisors, whose sum is σ = 12318691997714. Its totient is φ = 12318691997712.

The previous prime is 12318691997617. The next prime is 12318691997719. The reversal of 12318691997713 is 31779919681321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11816488750144 + 502203247569 = 3437512^2 + 708663^2 .

It is a cyclic number.

It is not a de Polignac number, because 12318691997713 - 2³⁷ = 12181253044241 is a prime.

It is not a weakly prime, because it can be changed into another prime (12318691997719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159345998856 + 6159345998857.

It is an arithmetic number, because the mean of its divisors is an integer number (6159345998857).

Almost surely, 2^{12318691997713} is an apocalyptic number.

It is an amenable number.

12318691997713 is a deficient number, since it is larger than the sum of its proper divisors (1).

12318691997713 is an equidigital number, since it uses as much as digits as its factorization.

12318691997713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30862944, while the sum is 67.

The spelling of 12318691997713 in words is "twelve trillion, three hundred eighteen billion, six hundred ninety-one million, nine hundred ninety-seven thousand, seven hundred thirteen".