318801320656 has 80 divisors (see below), whose sum is σ = 761225417344. Its totient is φ = 125952164352.

The previous prime is 318801320597. The next prime is 318801320683. The reversal of 318801320656 is 656023108813.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957571 + ... + 1246813.

Almost surely, 2^318801320656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318801320656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (380612708672).

318801320656 is an abundant number, since it is smaller than the sum of its proper divisors (442424096688).

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

318801320656 is a wasteful number, since it uses less digits than its factorization.

318801320656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290028 (or 290022 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 318801320656 in words is "three hundred eighteen billion, eight hundred one million, three hundred twenty thousand, six hundred fifty-six".