320865384975 has 12 divisors (see below), whose sum is σ = 530497436616. Its totient is φ = 171128205280.

The previous prime is 320865384869. The next prime is 320865384991. The reversal of 320865384975 is 579483568023.

It is not a de Polignac number, because 320865384975 - 2³² = 316570417679 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2139102492 + ... + 2139102641.

It is an arithmetic number, because the mean of its divisors is an integer number (44208119718).

Almost surely, 2^320865384975 is an apocalyptic number.

320865384975 is a deficient number, since it is larger than the sum of its proper divisors (209632051641).

320865384975 is a wasteful number, since it uses less digits than its factorization.

320865384975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278205146 (or 4278205141 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 60.

The spelling of 320865384975 in words is "three hundred twenty billion, eight hundred sixty-five million, three hundred eighty-four thousand, nine hundred seventy-five".