320123339984 has 80 divisors (see below), whose sum is σ = 716558304000. Its totient is φ = 135707000832.

The previous prime is 320123339959. The next prime is 320123339989. The reversal of 320123339984 is 489933321023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320123339989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7290704 + ... + 7334480.

It is an arithmetic number, because the mean of its divisors is an integer number (8956978800).

Almost surely, 2^320123339984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320123339984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358279152000).

320123339984 is an abundant number, since it is smaller than the sum of its proper divisors (396434964016).

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

320123339984 is a wasteful number, since it uses less digits than its factorization.

320123339984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44500 (or 44494 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 47.

The spelling of 320123339984 in words is "three hundred twenty billion, one hundred twenty-three million, three hundred thirty-nine thousand, nine hundred eighty-four".