318646121256 has 48 divisors (see below), whose sum is σ = 884048698260. Its totient is φ = 103624753920.

The previous prime is 318646121237. The next prime is 318646121257. The reversal of 318646121256 is 652121646813.

318646121256 is a `hidden beast` number, since 3 + 1 + 8 + 6 + 4 + 612 + 1 + 25 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 251271612900 + 67374508356 = 501270^2 + 259566^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (318646121257) 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 11 ways as a sum of consecutive naturals, for example, 53968275 + ... + 53974178.

Almost surely, 2^318646121256 is an apocalyptic number.

318646121256 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

318646121256 is an abundant number, since it is smaller than the sum of its proper divisors (565402577004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

318646121256 is a wasteful number, since it uses less digits than its factorization.

318646121256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107942506 (or 107942499 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The spelling of 318646121256 in words is "three hundred eighteen billion, six hundred forty-six million, one hundred twenty-one thousand, two hundred fifty-six".