320490978886 has 64 divisors (see below), whose sum is σ = 534675456000. Its totient is φ = 143172147456.

The previous prime is 320490978869. The next prime is 320490978919. The reversal of 320490978886 is 688879094023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25033915 + ... + 25046713.

It is an arithmetic number, because the mean of its divisors is an integer number (8354304000).

Almost surely, 2^320490978886 is an apocalyptic number.

320490978886 is a deficient number, since it is larger than the sum of its proper divisors (214184477114).

320490978886 is a wasteful number, since it uses less digits than its factorization.

320490978886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13133.

The product of its (nonzero) digits is 41803776, while the sum is 64.

The spelling of 320490978886 in words is "three hundred twenty billion, four hundred ninety million, nine hundred seventy-eight thousand, eight hundred eighty-six".