12815264317 has 2 divisors, whose sum is σ = 12815264318. Its totient is φ = 12815264316.

The previous prime is 12815264299. The next prime is 12815264333. The reversal of 12815264317 is 71346251821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8849917476 + 3965346841 = 94074^2 + 62971^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12815264317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12815264317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12815264617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6407632158 + 6407632159.

It is an arithmetic number, because the mean of its divisors is an integer number (6407632159).

Almost surely, 2^12815264317 is an apocalyptic number.

It is an amenable number.

12815264317 is a deficient number, since it is larger than the sum of its proper divisors (1).

12815264317 is an equidigital number, since it uses as much as digits as its factorization.

12815264317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The spelling of 12815264317 in words is "twelve billion, eight hundred fifteen million, two hundred sixty-four thousand, three hundred seventeen".