320044644320 has 48 divisors (see below), whose sum is σ = 757991173968. Its totient is φ = 127698585600.

The previous prime is 320044644319. The next prime is 320044644329. The reversal of 320044644320 is 23446440023.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320044644329) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2429954 + ... + 2558273.

It is an arithmetic number, because the mean of its divisors is an integer number (15791482791).

Almost surely, 2^320044644320 is an apocalyptic number.

It is an amenable number.

320044644320 is an abundant number, since it is smaller than the sum of its proper divisors (437946529648).

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

320044644320 is a wasteful number, since it uses less digits than its factorization.

320044644320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4988643 (or 4988635 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

The spelling of 320044644320 in words is "three hundred twenty billion, forty-four million, six hundred forty-four thousand, three hundred twenty".