316640293265 has 16 divisors (see below), whose sum is σ = 380287852560. Its totient is φ = 253099342080.

The previous prime is 316640293261. The next prime is 316640293283. The reversal of 316640293265 is 562392046613.

It is a Cunningham number, because it is equal to 562708²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 52477188241 + 264163105024 = 229079^2 + 513968^2 .

It is not a de Polignac number, because 316640293265 - 2² = 316640293261 is a prime.

It is a super-2 number, since 2×316640293265² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (316640293261) 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, 41985395 + ... + 41992935.

It is an arithmetic number, because the mean of its divisors is an integer number (23767990785).

Almost surely, 2^316640293265 is an apocalyptic number.

It is an amenable number.

316640293265 is a deficient number, since it is larger than the sum of its proper divisors (63647559295).

316640293265 is a wasteful number, since it uses less digits than its factorization.

316640293265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13492.

The product of its (nonzero) digits is 1399680, while the sum is 47.

The spelling of 316640293265 in words is "three hundred sixteen billion, six hundred forty million, two hundred ninety-three thousand, two hundred sixty-five".