315220636623165 has 128 divisors (see below), whose sum is σ = 621265341699072. Its totient is φ = 132904121794560.

The previous prime is 315220636623163. The next prime is 315220636623199. The reversal of 315220636623165 is 561326636022513.

It is not a de Polignac number, because 315220636623165 - 2¹ = 315220636623163 is a prime.

It is a super-2 number, since 2×315220636623165² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315220636623163) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8671085629 + ... + 8671121981.

It is an arithmetic number, because the mean of its divisors is an integer number (4853635482024).

Almost surely, 2^{315220636623165} is an apocalyptic number.

315220636623165 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

315220636623165 is a deficient number, since it is larger than the sum of its proper divisors (306044705075907).

315220636623165 is a wasteful number, since it uses less digits than its factorization.

315220636623165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41559.

The product of its (nonzero) digits is 6998400, while the sum is 51.

The spelling of 315220636623165 in words is "three hundred fifteen trillion, two hundred twenty billion, six hundred thirty-six million, six hundred twenty-three thousand, one hundred sixty-five".