565555555564 has 6 divisors (see below), whose sum is σ = 989722222244. Its totient is φ = 282777777780.

The previous prime is 565555555559. The next prime is 565555555589. The reversal of 565555555564 is 465555555565.

It is a happy number.

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 as a sum of consecutive naturals, namely, 70694444442 + ... + 70694444449.

Almost surely, 2^565555555564 is an apocalyptic number.

It is an amenable number.

565555555564 is a deficient number, since it is larger than the sum of its proper divisors (424166666680).

565555555564 is a wasteful number, since it uses less digits than its factorization.

565555555564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141388888895 (or 141388888893 counting only the distinct ones).

The product of its digits is 281250000, while the sum is 61.

Subtracting from 565555555564 its reverse (465555555565), we obtain a palindrome (99999999999).

The spelling of 565555555564 in words is "five hundred sixty-five billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred sixty-four".