205566263223 has 16 divisors (see below), whose sum is σ = 277824500736. Its totient is φ = 135187597440.

The previous prime is 205566263213. The next prime is 205566263263. The reversal of 205566263223 is 322362665502.

It is a happy number.

It is not a de Polignac number, because 205566263223 - 2⁹ = 205566262711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205566263213) 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, 1365415 + ... + 1508472.

It is an arithmetic number, because the mean of its divisors is an integer number (17364031296).

Almost surely, 2^205566263223 is an apocalyptic number.

205566263223 is a deficient number, since it is larger than the sum of its proper divisors (72258237513).

205566263223 is a wasteful number, since it uses less digits than its factorization.

205566263223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874214.

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 205566263223 in words is "two hundred five billion, five hundred sixty-six million, two hundred sixty-three thousand, two hundred twenty-three".