320324643564 has 48 divisors (see below), whose sum is σ = 793279267200. Its totient is φ = 100254136576.

The previous prime is 320324643559. The next prime is 320324643577. The reversal of 320324643564 is 465346423023.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1788294 + ... + 1959245.

It is an arithmetic number, because the mean of its divisors is an integer number (16526651400).

Almost surely, 2^320324643564 is an apocalyptic number.

320324643564 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

320324643564 is an abundant number, since it is smaller than the sum of its proper divisors (472954623636).

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

320324643564 is a wasteful number, since it uses less digits than its factorization.

320324643564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747982 (or 3747980 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 42.

The spelling of 320324643564 in words is "three hundred twenty billion, three hundred twenty-four million, six hundred forty-three thousand, five hundred sixty-four".