318706263680 has 128 divisors (see below), whose sum is σ = 875617776000. Its totient is φ = 108659994624.

The previous prime is 318706263649. The next prime is 318706263751. The reversal of 318706263680 is 86362607813.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

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, 603206 + ... + 1000634.

It is an arithmetic number, because the mean of its divisors is an integer number (6840763875).

Almost surely, 2^318706263680 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 318706263680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437808888000).

318706263680 is an abundant number, since it is smaller than the sum of its proper divisors (556911512320).

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

318706263680 is a wasteful number, since it uses less digits than its factorization.

318706263680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397634 (or 397622 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 318706263680 in words is "three hundred eighteen billion, seven hundred six million, two hundred sixty-three thousand, six hundred eighty".