206133128568 has 48 divisors (see below), whose sum is σ = 559140220080. Its totient is φ = 68604827904.

The previous prime is 206133128561. The next prime is 206133128581. The reversal of 206133128568 is 865821331602.

206133128568 is a `hidden beast` number, since 2 + 0 + 61 + 3 + 3 + 1 + 28 + 568 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206133128561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2165905 + ... + 2259072.

It is an arithmetic number, because the mean of its divisors is an integer number (11648754585).

Almost surely, 2^206133128568 is an apocalyptic number.

It is an amenable number.

206133128568 is an abundant number, since it is smaller than the sum of its proper divisors (353007091512).

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

206133128568 is a wasteful number, since it uses less digits than its factorization.

206133128568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425636 (or 4425629 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 206133128568 in words is "two hundred six billion, one hundred thirty-three million, one hundred twenty-eight thousand, five hundred sixty-eight".