206564045163 has 16 divisors (see below), whose sum is σ = 322441437696. Its totient is φ = 115157655360.

The previous prime is 206564045153. The next prime is 206564045167. The reversal of 206564045163 is 361540465602.

It is not a de Polignac number, because 206564045163 - 2⁹ = 206564044651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206564045167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119955031 + ... + 119956752.

It is an arithmetic number, because the mean of its divisors is an integer number (20152589856).

Almost surely, 2^206564045163 is an apocalyptic number.

206564045163 is a deficient number, since it is larger than the sum of its proper divisors (115877392533).

206564045163 is a wasteful number, since it uses less digits than its factorization.

206564045163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239911834.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 206564045163 in words is "two hundred six billion, five hundred sixty-four million, forty-five thousand, one hundred sixty-three".