206289166133 has 4 divisors (see below), whose sum is σ = 206290392960. Its totient is φ = 206287939308.

The previous prime is 206289166121. The next prime is 206289166183. The reversal of 206289166133 is 331661982602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206289166133 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 (206289166183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311735 + ... + 713972.

It is an arithmetic number, because the mean of its divisors is an integer number (51572598240).

Almost surely, 2^206289166133 is an apocalyptic number.

It is an amenable number.

206289166133 is a deficient number, since it is larger than the sum of its proper divisors (1226827).

206289166133 is a wasteful number, since it uses less digits than its factorization.

206289166133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226826.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 206289166133 in words is "two hundred six billion, two hundred eighty-nine million, one hundred sixty-six thousand, one hundred thirty-three".