318845661697 has 16 divisors (see below), whose sum is σ = 321061732992. Its totient is φ = 316639031040.

The previous prime is 318845661661. The next prime is 318845661707. The reversal of 318845661697 is 796166548813.

It is a cyclic number.

It is not a de Polignac number, because 318845661697 - 2⁷ = 318845661569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318845668697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194773563 + ... + 194775199.

It is an arithmetic number, because the mean of its divisors is an integer number (20066358312).

Almost surely, 2^318845661697 is an apocalyptic number.

It is an amenable number.

318845661697 is a deficient number, since it is larger than the sum of its proper divisors (2216071295).

318845661697 is a wasteful number, since it uses less digits than its factorization.

318845661697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768.

The product of its digits is 52254720, while the sum is 64.

The spelling of 318845661697 in words is "three hundred eighteen billion, eight hundred forty-five million, six hundred sixty-one thousand, six hundred ninety-seven".