206176066189 has 4 divisors (see below), whose sum is σ = 207244336156. Its totient is φ = 205107796224.

The previous prime is 206176066183. The next prime is 206176066199. The reversal of 206176066189 is 981660671602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68733108900 + 137442957289 = 262170^2 + 370733^2 .

It is a cyclic number.

It is not a de Polignac number, because 206176066189 - 2¹⁵ = 206176033421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206176066183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534134694 + ... + 534135079.

It is an arithmetic number, because the mean of its divisors is an integer number (51811084039).

Almost surely, 2^206176066189 is an apocalyptic number.

It is an amenable number.

206176066189 is a deficient number, since it is larger than the sum of its proper divisors (1068269967).

206176066189 is a wasteful number, since it uses less digits than its factorization.

206176066189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068269966.

The product of its (nonzero) digits is 1306368, while the sum is 52.

It can be divided in two parts, 20617 and 6066189, that added together give a palindrome (6086806).

The spelling of 206176066189 in words is "two hundred six billion, one hundred seventy-six million, sixty-six thousand, one hundred eighty-nine".