321244466320 has 80 divisors (see below), whose sum is σ = 773210654208. Its totient is φ = 123993999360.

The previous prime is 321244466297. The next prime is 321244466377. The reversal of 321244466320 is 23664442123.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×321244466320² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 321244466320.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 673912 + ... + 1047208.

Almost surely, 2^321244466320 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 321244466320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386605327104).

321244466320 is an abundant number, since it is smaller than the sum of its proper divisors (451966187888).

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

321244466320 is a wasteful number, since it uses less digits than its factorization.

321244466320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373688 (or 373682 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 37.

The spelling of 321244466320 in words is "three hundred twenty-one billion, two hundred forty-four million, four hundred sixty-six thousand, three hundred twenty".