320063642165640 has 64 divisors (see below), whose sum is σ = 982520948059200. Its totient is φ = 83365413772032.

The previous prime is 320063642165587. The next prime is 320063642165671. The reversal of 320063642165640 is 46561246360023.

It is a self number, because there is not a number n which added to its sum of digits gives 320063642165640.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31013913655 + ... + 31013923974.

It is an arithmetic number, because the mean of its divisors is an integer number (15351889813425).

Almost surely, 2^{320063642165640} is an apocalyptic number.

320063642165640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320063642165640 is an abundant number, since it is smaller than the sum of its proper divisors (662457305893560).

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

320063642165640 is a wasteful number, since it uses less digits than its factorization.

320063642165640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62027837686 (or 62027837682 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 48.

The spelling of 320063642165640 in words is "three hundred twenty trillion, sixty-three billion, six hundred forty-two million, one hundred sixty-five thousand, six hundred forty".