206208258866 has 8 divisors (see below), whose sum is σ = 309705417840. Its totient is φ = 102973119588.

The previous prime is 206208258853. The next prime is 206208258887. The reversal of 206208258866 is 668852802602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65502956 + ... + 65506103.

It is an arithmetic number, because the mean of its divisors is an integer number (38713177230).

Almost surely, 2^206208258866 is an apocalyptic number.

206208258866 is a deficient number, since it is larger than the sum of its proper divisors (103497158974).

206208258866 is a wasteful number, since it uses less digits than its factorization.

206208258866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131009848.

The product of its (nonzero) digits is 4423680, while the sum is 53.

The spelling of 206208258866 in words is "two hundred six billion, two hundred eight million, two hundred fifty-eight thousand, eight hundred sixty-six".