320981488272 has 480 divisors, whose sum is σ = 993141077760. Its totient is φ = 96386088960.

The previous prime is 320981488231. The next prime is 320981488273. The reversal of 320981488272 is 272884189023.

320981488272 is a `hidden beast` number, since 3 + 2 + 0 + 98 + 1 + 488 + 2 + 72 = 666.

It is not an unprimeable number, because it can be changed into a prime (320981488273) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1158777798 + ... + 1158778074.

It is an arithmetic number, because the mean of its divisors is an integer number (2069043912).

Almost surely, 2^320981488272 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 320981488272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496570538880).

320981488272 is an abundant number, since it is smaller than the sum of its proper divisors (672159589488).

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

320981488272 is a wasteful number, since it uses less digits than its factorization.

320981488272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 320981488272 in words is "three hundred twenty billion, nine hundred eighty-one million, four hundred eighty-eight thousand, two hundred seventy-two".