315804750664517 has 8 divisors (see below), whose sum is σ = 316361090410200. Its totient is φ = 315248415560704.

The previous prime is 315804750664433. The next prime is 315804750664553. The reversal of 315804750664517 is 715466057408513.

It can be written as a sum of positive squares in 4 ways, for example, as 11553513710116 + 304251236954401 = 3399046^2 + 17442799^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315804750664517 - 2³⁸ = 315529872757573 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 315804750664517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315804750664577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153058709 + ... + 155108277.

It is an arithmetic number, because the mean of its divisors is an integer number (39545136301275).

Almost surely, 2^{315804750664517} is an apocalyptic number.

It is an amenable number.

315804750664517 is a deficient number, since it is larger than the sum of its proper divisors (556339745683).

315804750664517 is a wasteful number, since it uses less digits than its factorization.

315804750664517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320935.

The product of its (nonzero) digits is 84672000, while the sum is 62.

The spelling of 315804750664517 in words is "three hundred fifteen trillion, eight hundred four billion, seven hundred fifty million, six hundred sixty-four thousand, five hundred seventeen".