315606426917 has 2 divisors, whose sum is σ = 315606426918. Its totient is φ = 315606426916.

The previous prime is 315606426913. The next prime is 315606426979. The reversal of 315606426917 is 719624606513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302817983521 + 12788443396 = 550289^2 + 113086^2 .

It is a cyclic number.

It is not a de Polignac number, because 315606426917 - 2² = 315606426913 is a prime.

It is a super-2 number, since 2×315606426917² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315606426913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157803213458 + 157803213459.

It is an arithmetic number, because the mean of its divisors is an integer number (157803213459).

Almost surely, 2^315606426917 is an apocalyptic number.

It is an amenable number.

315606426917 is a deficient number, since it is larger than the sum of its proper divisors (1).

315606426917 is an equidigital number, since it uses as much as digits as its factorization.

315606426917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 315606426917 in words is "three hundred fifteen billion, six hundred six million, four hundred twenty-six thousand, nine hundred seventeen".