320415616768 has 72 divisors (see below), whose sum is σ = 689507613648. Its totient is φ = 147727491072.

The previous prime is 320415616691. The next prime is 320415616783. The reversal of 320415616768 is 867616514023.

It is a congruent number.

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, 3121071 + ... + 3222097.

It is an arithmetic number, because the mean of its divisors is an integer number (9576494634).

Almost surely, 2^320415616768 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 320415616768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344753806824).

320415616768 is an abundant number, since it is smaller than the sum of its proper divisors (369091996880).

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

320415616768 is a wasteful number, since it uses less digits than its factorization.

320415616768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102009 (or 101995 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 320415616768 in words is "three hundred twenty billion, four hundred fifteen million, six hundred sixteen thousand, seven hundred sixty-eight".