321133999944 has 64 divisors (see below), whose sum is σ = 823133767680. Its totient is φ = 104342720000.

The previous prime is 321133999943. The next prime is 321134000039. The reversal of 321133999944 is 449999331123.

It is not an unprimeable number, because it can be changed into a prime (321133999943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 990814 + ... + 1274354.

It is an arithmetic number, because the mean of its divisors is an integer number (12861465120).

Almost surely, 2^321133999944 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 321133999944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411566883840).

321133999944 is an abundant number, since it is smaller than the sum of its proper divisors (501999767736).

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

321133999944 is a wasteful number, since it uses less digits than its factorization.

321133999944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284742 (or 284738 counting only the distinct ones).

The product of its digits is 5668704, while the sum is 57.

The spelling of 321133999944 in words is "three hundred twenty-one billion, one hundred thirty-three million, nine hundred ninety-nine thousand, nine hundred forty-four".