206341318656 has 144 divisors (see below), whose sum is σ = 650129669280. Its totient is φ = 62527610880.

The previous prime is 206341318643. The next prime is 206341318661. The reversal of 206341318656 is 656813143602.

206341318656 is a `hidden beast` number, since 2 + 0 + 6 + 3 + 413 + 186 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 306100 + ... + 711603.

It is an arithmetic number, because the mean of its divisors is an integer number (4514789370).

Almost surely, 2^206341318656 is an apocalyptic number.

It is an amenable number.

206341318656 is an abundant number, since it is smaller than the sum of its proper divisors (443788350624).

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

206341318656 is a wasteful number, since it uses less digits than its factorization.

206341318656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017742 (or 1017719 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 206341318656 in words is "two hundred six billion, three hundred forty-one million, three hundred eighteen thousand, six hundred fifty-six".