320884518320 has 20 divisors (see below), whose sum is σ = 746056505280. Its totient is φ = 128353807296.

The previous prime is 320884518307. The next prime is 320884518329. The reversal of 320884518320 is 23815488023.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (320884518329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2005528160 + ... + 2005528319.

It is an arithmetic number, because the mean of its divisors is an integer number (37302825264).

Almost surely, 2^320884518320 is an apocalyptic number.

It is an amenable number.

320884518320 is an abundant number, since it is smaller than the sum of its proper divisors (425171986960).

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

320884518320 is a wasteful number, since it uses less digits than its factorization.

320884518320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4011056492 (or 4011056486 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The spelling of 320884518320 in words is "three hundred twenty billion, eight hundred eighty-four million, five hundred eighteen thousand, three hundred twenty".