20020085333161 has 27 divisors (see below), whose sum is σ = 20846788059279. Its totient is φ = 19225377100608.

The previous prime is 20020085333153. The next prime is 20020085333203. The reversal of 20020085333161 is 16133358002002.

The square root of 20020085333161 is 4474381.

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

It can be written as a sum of positive squares in 13 ways, for example, as 19999401140761 + 20684192400 = 4472069^2 + 143820^2 .

It is not a de Polignac number, because 20020085333161 - 2³ = 20020085333153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020085333111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 35942702295 + ... + 35942702851.

Almost surely, 2^{20020085333161} is an apocalyptic number.

20020085333161 is the 4474381-st square number.

20020085333161 is the 2237191-st centered octagonal number.

It is an amenable number.

20020085333161 is a deficient number, since it is larger than the sum of its proper divisors (826702726118).

20020085333161 is an frugal number, since it uses more digits than its factorization.

20020085333161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 20020085333161 in words is "twenty trillion, twenty billion, eighty-five million, three hundred thirty-three thousand, one hundred sixty-one".