320339909376 has 126 divisors (see below), whose sum is σ = 958704729500. Its totient is φ = 106779907584.

The previous prime is 320339909363. The next prime is 320339909399. The reversal of 320339909376 is 673909933023.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 671626 + ... + 1044873.

Almost surely, 2^320339909376 is an apocalyptic number.

320339909376 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

320339909376 is an abundant number, since it is smaller than the sum of its proper divisors (638364820124).

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

320339909376 is an frugal number, since it uses more digits than its factorization.

320339909376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716533 (or 1716504 counting only the distinct ones).

The product of its (nonzero) digits is 4960116, while the sum is 54.

It can be divided in two parts, 32033 and 9909376, that added together give a square (9941409 = 3153²).

The spelling of 320339909376 in words is "three hundred twenty billion, three hundred thirty-nine million, nine hundred nine thousand, three hundred seventy-six".