321397375360 has 64 divisors (see below), whose sum is σ = 768472182000. Its totient is φ = 128536934400.

The previous prime is 321397375307. The next prime is 321397375373. The reversal of 321397375360 is 63573793123.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3992791 + ... + 4072489.

Almost surely, 2^321397375360 is an apocalyptic number.

It is an amenable number.

321397375360 is an abundant number, since it is smaller than the sum of its proper divisors (447074806640).

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

321397375360 is an equidigital number, since it uses as much as digits as its factorization.

321397375360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86019 (or 86007 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 49.

The spelling of 321397375360 in words is "three hundred twenty-one billion, three hundred ninety-seven million, three hundred seventy-five thousand, three hundred sixty".