318811553956 has 81 divisors (see below), whose sum is σ = 671136225921. Its totient is φ = 132124356000.

The previous prime is 318811553843. The next prime is 318811554023. The reversal of 318811553956 is 659355118813.

The square root of 318811553956 is 564634.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 489913956 + 318321640000 = 22134^2 + 564200^2 .

It is a junction number, because it is equal to n+sod(n) for n = 318811553897 and 318811553906.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 245050506 + ... + 245051806.

Almost surely, 2^318811553956 is an apocalyptic number.

318811553956 is the 564634-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318811553956

318811553956 is an abundant number, since it is smaller than the sum of its proper divisors (352324671965).

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

318811553956 is an equidigital number, since it uses as much as digits as its factorization.

318811553956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682 (or 1341 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 55.

The spelling of 318811553956 in words is "three hundred eighteen billion, eight hundred eleven million, five hundred fifty-three thousand, nine hundred fifty-six".