565505666056 has 64 divisors (see below), whose sum is σ = 1145881313280. Its totient is φ = 260976260160.

The previous prime is 565505666051. The next prime is 565505666087. The reversal of 565505666056 is 650666505565.

It is a junction number, because it is equal to n+sod(n) for n = 565505665988 and 565505666006.

It is not an unprimeable number, because it can be changed into a prime (565505666051) 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, 153505 + ... + 1074511.

It is an arithmetic number, because the mean of its divisors is an integer number (17904395520).

Almost surely, 2^565505666056 is an apocalyptic number.

It is an amenable number.

565505666056 is an abundant number, since it is smaller than the sum of its proper divisors (580375647224).

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

565505666056 is a wasteful number, since it uses less digits than its factorization.

565505666056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921154 (or 921150 counting only the distinct ones).

The product of its (nonzero) digits is 24300000, while the sum is 55.

The spelling of 565505666056 in words is "five hundred sixty-five billion, five hundred five million, six hundred sixty-six thousand, fifty-six".