565505666047 has 4 divisors (see below), whose sum is σ = 646292189776. Its totient is φ = 484719142320.

The previous prime is 565505666041. The next prime is 565505666051. The reversal of 565505666047 is 740666505565.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 565505666047 - 2³ = 565505666039 is a prime.

It is a super-2 number, since 2×565505666047² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (565505666041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40393261854 + ... + 40393261867.

It is an arithmetic number, because the mean of its divisors is an integer number (161573047444).

Almost surely, 2^565505666047 is an apocalyptic number.

565505666047 is a deficient number, since it is larger than the sum of its proper divisors (80786523729).

565505666047 is an equidigital number, since it uses as much as digits as its factorization.

565505666047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80786523728.

The product of its (nonzero) digits is 22680000, while the sum is 55.

The spelling of 565505666047 in words is "five hundred sixty-five billion, five hundred five million, six hundred sixty-six thousand, forty-seven".