205066364868 has 72 divisors (see below), whose sum is σ = 563245912320. Its totient is φ = 62668831680.

The previous prime is 205066364819. The next prime is 205066364903. The reversal of 205066364868 is 868463660502.

It is a happy number.

205066364868 is a `hidden beast` number, since 2 + 0 + 506 + 6 + 36 + 48 + 68 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4814355 + ... + 4856762.

Almost surely, 2^205066364868 is an apocalyptic number.

It is an amenable number.

205066364868 is an abundant number, since it is smaller than the sum of its proper divisors (358179547452).

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

205066364868 is a wasteful number, since it uses less digits than its factorization.

205066364868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9671177 (or 9671172 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 205066364868 in words is "two hundred five billion, sixty-six million, three hundred sixty-four thousand, eight hundred sixty-eight".