320796516864 has 40 divisors (see below), whose sum is σ = 854621974800. Its totient is φ = 106932171776.

The previous prime is 320796516851. The next prime is 320796516883. The reversal of 320796516864 is 468615697023.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104424414 + ... + 104427485.

It is an arithmetic number, because the mean of its divisors is an integer number (21365549370).

It is a 2-persistent number, because it is pandigital, and so is 2⋅320796516864 = 641593033728, but 3⋅320796516864 = 962389550592 is not.

Almost surely, 2^320796516864 is an apocalyptic number.

It is an amenable number.

320796516864 is an abundant number, since it is smaller than the sum of its proper divisors (533825457936).

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

320796516864 is an equidigital number, since it uses as much as digits as its factorization.

320796516864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208851920 (or 208851904 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 320796516864 in words is "three hundred twenty billion, seven hundred ninety-six million, five hundred sixteen thousand, eight hundred sixty-four".