15315165317 has 2 divisors, whose sum is σ = 15315165318. Its totient is φ = 15315165316.

The previous prime is 15315165277. The next prime is 15315165347. The reversal of 15315165317 is 71356151351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14974172161 + 340993156 = 122369^2 + 18466^2 .

It is a cyclic number.

It is not a de Polignac number, because 15315165317 - 2²⁴ = 15298388101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15315165347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7657582658 + 7657582659.

It is an arithmetic number, because the mean of its divisors is an integer number (7657582659).

Almost surely, 2^15315165317 is an apocalyptic number.

It is an amenable number.

15315165317 is a deficient number, since it is larger than the sum of its proper divisors (1).

15315165317 is an equidigital number, since it uses as much as digits as its factorization.

15315165317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47250, while the sum is 38.

The spelling of 15315165317 in words is "fifteen billion, three hundred fifteen million, one hundred sixty-five thousand, three hundred seventeen".