315525974399 has 4 divisors (see below), whose sum is σ = 317349824136. Its totient is φ = 313702124664.

The previous prime is 315525974381. The next prime is 315525974411. The reversal of 315525974399 is 993479525513.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 315525974399 - 2²⁴ = 315509197183 is a prime.

It is a super-2 number, since 2×315525974399² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315525974299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911924609 + ... + 911924954.

It is an arithmetic number, because the mean of its divisors is an integer number (79337456034).

Almost surely, 2^315525974399 is an apocalyptic number.

315525974399 is a deficient number, since it is larger than the sum of its proper divisors (1823849737).

315525974399 is a wasteful number, since it uses less digits than its factorization.

315525974399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823849736.

The product of its digits is 45927000, while the sum is 62.

The spelling of 315525974399 in words is "three hundred fifteen billion, five hundred twenty-five million, nine hundred seventy-four thousand, three hundred ninety-nine".