318320716786720 has 48 divisors (see below), whose sum is σ = 784729767044160. Its totient is φ = 121792274247424.

The previous prime is 318320716786643. The next prime is 318320716786753. The reversal of 318320716786720 is 27687617023813.

It is a super-2 number, since 2×318320716786720² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43250093710 + ... + 43250101069.

It is an arithmetic number, because the mean of its divisors is an integer number (16348536813420).

Almost surely, 2^{318320716786720} is an apocalyptic number.

It is an amenable number.

318320716786720 is an abundant number, since it is smaller than the sum of its proper divisors (466409050257440).

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

318320716786720 is a wasteful number, since it uses less digits than its factorization.

318320716786720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86500194817 (or 86500194809 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 61.

The spelling of 318320716786720 in words is "three hundred eighteen trillion, three hundred twenty billion, seven hundred sixteen million, seven hundred eighty-six thousand, seven hundred twenty".