321443936916 has 12 divisors (see below), whose sum is σ = 750035852832. Its totient is φ = 107147978968.

The previous prime is 321443936897. The next prime is 321443936963. The reversal of 321443936916 is 619639344123.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13393497360 + ... + 13393497383.

It is an arithmetic number, because the mean of its divisors is an integer number (62502987736).

Almost surely, 2^321443936916 is an apocalyptic number.

It is an amenable number.

321443936916 is an abundant number, since it is smaller than the sum of its proper divisors (428591915916).

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

321443936916 is a wasteful number, since it uses less digits than its factorization.

321443936916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26786994750 (or 26786994748 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 51.

The spelling of 321443936916 in words is "three hundred twenty-one billion, four hundred forty-three million, nine hundred thirty-six thousand, nine hundred sixteen".