315622636312987 has 2 divisors, whose sum is σ = 315622636312988. Its totient is φ = 315622636312986.

The previous prime is 315622636312979. The next prime is 315622636313069. The reversal of 315622636312987 is 789213636226513.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315622636312987 - 2³ = 315622636312979 is a prime.

It is not a weakly prime, because it can be changed into another prime (315622636312957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157811318156493 + 157811318156494.

It is an arithmetic number, because the mean of its divisors is an integer number (157811318156494).

Almost surely, 2^{315622636312987} is an apocalyptic number.

315622636312987 is a deficient number, since it is larger than the sum of its proper divisors (1).

315622636312987 is an equidigital number, since it uses as much as digits as its factorization.

315622636312987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117573120, while the sum is 64.

The spelling of 315622636312987 in words is "three hundred fifteen trillion, six hundred twenty-two billion, six hundred thirty-six million, three hundred twelve thousand, nine hundred eighty-seven".