321838366864 has 45 divisors (see below), whose sum is σ = 725403652761. Its totient is φ = 137923920960.

The previous prime is 321838366853. The next prime is 321838366903. The reversal of 321838366864 is 468663838123.

The square root of 321838366864 is 567308.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3832600464 + 318005766400 = 61908^2 + 563920^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321838366799 and 321838366808.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15874494 + ... + 15894754.

Almost surely, 2^321838366864 is an apocalyptic number.

321838366864 is the 567308-th square number.

It is an amenable number.

321838366864 is an abundant number, since it is smaller than the sum of its proper divisors (403565285897).

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

321838366864 is an frugal number, since it uses more digits than its factorization.

321838366864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40544 (or 20270 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 58.

The spelling of 321838366864 in words is "three hundred twenty-one billion, eight hundred thirty-eight million, three hundred sixty-six thousand, eight hundred sixty-four".