315633265642221 has 16 divisors (see below), whose sum is σ = 429806229832704. Its totient is φ = 205941400532784.

The previous prime is 315633265642193. The next prime is 315633265642271. The reversal of 315633265642221 is 122246562336513.

It is a happy number.

It is not a de Polignac number, because 315633265642221 - 2²⁶ = 315633198533357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315633265642271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12289591 + ... + 27969636.

It is an arithmetic number, because the mean of its divisors is an integer number (26862889364544).

Almost surely, 2^{315633265642221} is an apocalyptic number.

It is an amenable number.

315633265642221 is a deficient number, since it is larger than the sum of its proper divisors (114172964190483).

315633265642221 is a wasteful number, since it uses less digits than its factorization.

315633265642221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40314880.

The product of its digits is 9331200, while the sum is 51.

The spelling of 315633265642221 in words is "three hundred fifteen trillion, six hundred thirty-three billion, two hundred sixty-five million, six hundred forty-two thousand, two hundred twenty-one".