329913533161 has 9 divisors (see below), whose sum is σ = 330805653381. Its totient is φ = 329023816992.

The previous prime is 329913533143. The next prime is 329913533189. The reversal of 329913533161 is 161335319923.

The square root of 329913533161 is 574381.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 303181283161 + 26732250000 = 550619^2 + 163500^2 .

It is not a de Polignac number, because 329913533161 - 2⁹ = 329913532649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (329913533461) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 352095085 + ... + 352096021.

It is an arithmetic number, because the mean of its divisors is an integer number (36756183709).

Almost surely, 2^329913533161 is an apocalyptic number.

329913533161 is the 574381-st square number.

329913533161 is the 287191-st centered octagonal number.

It is an amenable number.

329913533161 is a deficient number, since it is larger than the sum of its proper divisors (892120220).

329913533161 is an frugal number, since it uses more digits than its factorization.

329913533161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100 (or 1550 counting only the distinct ones).

The product of its digits is 393660, while the sum is 46.

The spelling of 329913533161 in words is "three hundred twenty-nine billion, nine hundred thirteen million, five hundred thirty-three thousand, one hundred sixty-one".