315551232515 has 16 divisors (see below), whose sum is σ = 395243067456. Its totient is φ = 241393152000.

The previous prime is 315551232511. The next prime is 315551232523. The reversal of 315551232515 is 515232155513.

It is not a de Polignac number, because 315551232515 - 2² = 315551232511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315551232511) 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, 21686 + ... + 794715.

It is an arithmetic number, because the mean of its divisors is an integer number (24702691716).

Almost surely, 2^315551232515 is an apocalyptic number.

315551232515 is a deficient number, since it is larger than the sum of its proper divisors (79691834941).

315551232515 is a wasteful number, since it uses less digits than its factorization.

315551232515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819790.

The product of its digits is 112500, while the sum is 38.

The spelling of 315551232515 in words is "three hundred fifteen billion, five hundred fifty-one million, two hundred thirty-two thousand, five hundred fifteen".