255566205163 has 16 divisors (see below), whose sum is σ = 261728270496. Its totient is φ = 249456879360.

The previous prime is 255566205131. The next prime is 255566205173. The reversal of 255566205163 is 361502665552.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 255566205163 - 2⁵ = 255566205131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255566205173) 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, 8788095 + ... + 8817127.

It is an arithmetic number, because the mean of its divisors is an integer number (16358016906).

Almost surely, 2^255566205163 is an apocalyptic number.

255566205163 is a deficient number, since it is larger than the sum of its proper divisors (6162065333).

255566205163 is a wasteful number, since it uses less digits than its factorization.

255566205163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29934.

The product of its (nonzero) digits is 1620000, while the sum is 46.

The spelling of 255566205163 in words is "two hundred fifty-five billion, five hundred sixty-six million, two hundred five thousand, one hundred sixty-three".