321382289538 has 54 divisors (see below), whose sum is σ = 711709350339. Its totient is φ = 104811243432.

The previous prime is 321382289531. The next prime is 321382289549. The reversal of 321382289538 is 835982283123.

It is a happy number.

321382289538 is a `hidden beast` number, since 3 + 2 + 1 + 3 + 8 + 22 + 89 + 538 = 666.

It can be written as a sum of positive squares in only one way, i.e., 160691144769 + 160691144769 = 400863^2 + 400863^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=400863.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (321382289531) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 113041945 + ... + 113044787.

Almost surely, 2^321382289538 is an apocalyptic number.

321382289538 is an abundant number, since it is smaller than the sum of its proper divisors (390327060801).

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

321382289538 is an frugal number, since it uses more digits than its factorization.

321382289538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5788 (or 2895 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 321382289538 in words is "three hundred twenty-one billion, three hundred eighty-two million, two hundred eighty-nine thousand, five hundred thirty-eight".