2315315666 has 4 divisors (see below), whose sum is σ = 3472973502. Its totient is φ = 1157657832.

The previous prime is 2315315603. The next prime is 2315315671. The reversal of 2315315666 is 6665135132.

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

It can be written as a sum of positive squares in only one way, i.e., 2018615041 + 296700625 = 44929^2 + 17225^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578828915 + ... + 578828918.

Almost surely, 2^2315315666 is an apocalyptic number.

2315315666 is a deficient number, since it is larger than the sum of its proper divisors (1157657836).

2315315666 is a wasteful number, since it uses less digits than its factorization.

2315315666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157657835.

The product of its digits is 97200, while the sum is 38.

The square root of 2315315666 is about 48117.7271491495. The cubic root of 2315315666 is about 1322.9296092972.

The spelling of 2315315666 in words is "two billion, three hundred fifteen million, three hundred fifteen thousand, six hundred sixty-six".