165326307328 has 480 divisors, whose sum is σ = 434516633600. Its totient is φ = 62426972160.

The previous prime is 165326307323. The next prime is 165326307361. The reversal of 165326307328 is 823703623561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165326307323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2264743900 + ... + 2264743972.

Almost surely, 2^165326307328 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 165326307328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217258316800).

165326307328 is an abundant number, since it is smaller than the sum of its proper divisors (269190326272).

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

165326307328 is an frugal number, since it uses more digits than its factorization.

165326307328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 165326307328 in words is "one hundred sixty-five billion, three hundred twenty-six million, three hundred seven thousand, three hundred twenty-eight".