320764879520 has 48 divisors (see below), whose sum is σ = 797691615840. Its totient is φ = 121553005824.

The previous prime is 320764879517. The next prime is 320764879541. The reversal of 320764879520 is 25978467023.

It is an unprimeable number.

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, 52754342 + ... + 52760421.

It is an arithmetic number, because the mean of its divisors is an integer number (16618575330).

Almost surely, 2^320764879520 is an apocalyptic number.

It is an amenable number.

320764879520 is an abundant number, since it is smaller than the sum of its proper divisors (476926736320).

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

320764879520 is a wasteful number, since it uses less digits than its factorization.

320764879520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105514797 (or 105514789 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 320764879520 in words is "three hundred twenty billion, seven hundred sixty-four million, eight hundred seventy-nine thousand, five hundred twenty".