321689937140 has 96 divisors (see below), whose sum is σ = 793823538816. Its totient is φ = 107956477440.

The previous prime is 321689937103. The next prime is 321689937167. The reversal of 321689937140 is 41739986123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17731514 + ... + 17749646.

It is an arithmetic number, because the mean of its divisors is an integer number (8268995196).

Almost surely, 2^321689937140 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 321689937140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396911769408).

321689937140 is an abundant number, since it is smaller than the sum of its proper divisors (472133601676).

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

321689937140 is a wasteful number, since it uses less digits than its factorization.

321689937140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24369 (or 24367 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 321689937140 in words is "three hundred twenty-one billion, six hundred eighty-nine million, nine hundred thirty-seven thousand, one hundred forty".