320216680784 has 80 divisors (see below), whose sum is σ = 833011267200. Its totient is φ = 115162836480.

The previous prime is 320216680759. The next prime is 320216680787. The reversal of 320216680784 is 487086612023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320216680787) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9980759 + ... + 10012790.

It is an arithmetic number, because the mean of its divisors is an integer number (10412640840).

Almost surely, 2^320216680784 is an apocalyptic number.

It is an amenable number.

320216680784 is an abundant number, since it is smaller than the sum of its proper divisors (512794586416).

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

320216680784 is a wasteful number, since it uses less digits than its factorization.

320216680784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19993588 (or 19993582 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 320216680784 in words is "three hundred twenty billion, two hundred sixteen million, six hundred eighty thousand, seven hundred eighty-four".