328161789522 has 54 divisors (see below), whose sum is σ = 827144534853. Its totient is φ = 93755650464.

The previous prime is 328161789503. The next prime is 328161789547. The reversal of 328161789522 is 225987161823.

328161789522 is a `hidden beast` number, since 3 + 28 + 1 + 6 + 17 + 89 + 522 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 315067793481 + 13093996041 = 561309^2 + 114429^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=405069.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 17003254 + ... + 17022542.

Almost surely, 2^328161789522 is an apocalyptic number.

328161789522 is an abundant number, since it is smaller than the sum of its proper divisors (498982745331).

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

328161789522 is an frugal number, since it uses more digits than its factorization.

328161789522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38600 (or 19301 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 328161789522 in words is "three hundred twenty-eight billion, one hundred sixty-one million, seven hundred eighty-nine thousand, five hundred twenty-two".