321376911128 has 192 divisors, whose sum is σ = 810560520000. Its totient is φ = 117971804160.

The previous prime is 321376911113. The next prime is 321376911197. The reversal of 321376911128 is 821119673123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6124748 + ... + 6176996.

It is an arithmetic number, because the mean of its divisors is an integer number (4221669375).

Almost surely, 2^321376911128 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 321376911128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405280260000).

321376911128 is an abundant number, since it is smaller than the sum of its proper divisors (489183608872).

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

321376911128 is a wasteful number, since it uses less digits than its factorization.

321376911128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52370 (or 52359 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The spelling of 321376911128 in words is "three hundred twenty-one billion, three hundred seventy-six million, nine hundred eleven thousand, one hundred twenty-eight".