315615362604391 has 2 divisors, whose sum is σ = 315615362604392. Its totient is φ = 315615362604390.

The previous prime is 315615362604379. The next prime is 315615362604481. The reversal of 315615362604391 is 193406263516513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315615362604391 - 2⁷ = 315615362604263 is a prime.

It is a super-2 number, since 2×315615362604391² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315615362664391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157807681302195 + 157807681302196.

It is an arithmetic number, because the mean of its divisors is an integer number (157807681302196).

Almost surely, 2^{315615362604391} is an apocalyptic number.

315615362604391 is a deficient number, since it is larger than the sum of its proper divisors (1).

315615362604391 is an equidigital number, since it uses as much as digits as its factorization.

315615362604391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10497600, while the sum is 55.

The spelling of 315615362604391 in words is "three hundred fifteen trillion, six hundred fifteen billion, three hundred sixty-two million, six hundred four thousand, three hundred ninety-one".