315045240243565 has 16 divisors (see below), whose sum is σ = 407142765934128. Its totient is φ = 232644576485376.

The previous prime is 315045240243553. The next prime is 315045240243607. The reversal of 315045240243565 is 565342042540513.

It can be written as a sum of positive squares in 8 ways, for example, as 92303883315081 + 222741356928484 = 9607491^2 + 14924522^2 .

It is a cyclic number.

It is not a de Polignac number, because 315045240243565 - 2²⁵ = 315045206689133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40303444 + ... + 47481133.

It is an arithmetic number, because the mean of its divisors is an integer number (25446422870883).

Almost surely, 2^{315045240243565} is an apocalyptic number.

It is an amenable number.

315045240243565 is a deficient number, since it is larger than the sum of its proper divisors (92097525690563).

315045240243565 is a wasteful number, since it uses less digits than its factorization.

315045240243565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87839808.

The product of its (nonzero) digits is 8640000, while the sum is 49.

The spelling of 315045240243565 in words is "three hundred fifteen trillion, forty-five billion, two hundred forty million, two hundred forty-three thousand, five hundred sixty-five".