315161450263717 has 2 divisors, whose sum is σ = 315161450263718. Its totient is φ = 315161450263716.

The previous prime is 315161450263651. The next prime is 315161450263763. The reversal of 315161450263717 is 717362054161513.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286914340594116 + 28247109669601 = 16938546^2 + 5314801^2 .

It is a cyclic number.

It is not a de Polignac number, because 315161450263717 - 2⁴⁷ = 174423961908389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315161450263787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157580725131858 + 157580725131859.

It is an arithmetic number, because the mean of its divisors is an integer number (157580725131859).

Almost surely, 2^{315161450263717} is an apocalyptic number.

It is an amenable number.

315161450263717 is a deficient number, since it is larger than the sum of its proper divisors (1).

315161450263717 is an equidigital number, since it uses as much as digits as its factorization.

315161450263717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 315161450263717 in words is "three hundred fifteen trillion, one hundred sixty-one billion, four hundred fifty million, two hundred sixty-three thousand, seven hundred seventeen".