321907159216 has 80 divisors (see below), whose sum is σ = 697708200960. Its totient is φ = 142982599680.

The previous prime is 321907159213. The next prime is 321907159237. The reversal of 321907159216 is 612951709123.

It is not an unprimeable number, because it can be changed into a prime (321907159213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1285605 + ... + 1515451.

It is an arithmetic number, because the mean of its divisors is an integer number (8721352512).

Almost surely, 2^321907159216 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 321907159216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348854100480).

321907159216 is an abundant number, since it is smaller than the sum of its proper divisors (375801041744).

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

321907159216 is a wasteful number, since it uses less digits than its factorization.

321907159216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230162 (or 230156 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 46.

The spelling of 321907159216 in words is "three hundred twenty-one billion, nine hundred seven million, one hundred fifty-nine thousand, two hundred sixteen".