316665510857 has 4 divisors (see below), whose sum is σ = 319570699140. Its totient is φ = 313760322576.

The previous prime is 316665510841. The next prime is 316665510907. The reversal of 316665510857 is 758015566613.

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

It can be written as a sum of positive squares in 2 ways, for example, as 226403720761 + 90261790096 = 475819^2 + 300436^2 .

It is a cyclic number.

It is not a de Polignac number, because 316665510857 - 2⁴ = 316665510841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 316665510799 and 316665510808.

It is not an unprimeable number, because it can be changed into a prime (316665516857) 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, 1452593978 + ... + 1452594195.

It is an arithmetic number, because the mean of its divisors is an integer number (79892674785).

Almost surely, 2^316665510857 is an apocalyptic number.

It is an amenable number.

316665510857 is a deficient number, since it is larger than the sum of its proper divisors (2905188283).

316665510857 is a wasteful number, since it uses less digits than its factorization.

316665510857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905188282.

The product of its (nonzero) digits is 4536000, while the sum is 53.

The spelling of 316665510857 in words is "three hundred sixteen billion, six hundred sixty-five million, five hundred ten thousand, eight hundred fifty-seven".