315220636623163 has 2 divisors, whose sum is σ = 315220636623164. Its totient is φ = 315220636623162.

The previous prime is 315220636623143. The next prime is 315220636623199. The reversal of 315220636623163 is 361326636022513.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315220636623163 - 2²⁹ = 315220099752251 is a prime.

It is a super-2 number, since 2×315220636623163² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (315220636623143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157610318311581 + 157610318311582.

It is an arithmetic number, because the mean of its divisors is an integer number (157610318311582).

Almost surely, 2^{315220636623163} is an apocalyptic number.

315220636623163 is a deficient number, since it is larger than the sum of its proper divisors (1).

315220636623163 is an equidigital number, since it uses as much as digits as its factorization.

315220636623163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 49.

The spelling of 315220636623163 in words is "three hundred fifteen trillion, two hundred twenty billion, six hundred thirty-six million, six hundred twenty-three thousand, one hundred sixty-three".