320485281389 has 8 divisors (see below), whose sum is σ = 394443423360. Its totient is φ = 253570772016.

The previous prime is 320485281379. The next prime is 320485281407. The reversal of 320485281389 is 983182584023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320485281389 - 2³² = 316190314093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320485281389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320485281359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1760908049 + ... + 1760908230.

It is an arithmetic number, because the mean of its divisors is an integer number (49305427920).

Almost surely, 2^320485281389 is an apocalyptic number.

It is an amenable number.

320485281389 is a deficient number, since it is larger than the sum of its proper divisors (73958141971).

320485281389 is a wasteful number, since it uses less digits than its factorization.

320485281389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521816299.

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 320485281389 in words is "three hundred twenty billion, four hundred eighty-five million, two hundred eighty-one thousand, three hundred eighty-nine".