565505665988 has 6 divisors (see below), whose sum is σ = 989634915486. Its totient is φ = 282752832992.

The previous prime is 565505665897. The next prime is 565505665997. The reversal of 565505665988 is 889566505565.

It can be written as a sum of positive squares in only one way, i.e., 545615640964 + 19890025024 = 738658^2 + 141032^2 .

It is a super-2 number, since 2×565505665988² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70688208245 + ... + 70688208252.

It is an arithmetic number, because the mean of its divisors is an integer number (164939152581).

Almost surely, 2^565505665988 is an apocalyptic number.

It is an amenable number.

565505665988 is a deficient number, since it is larger than the sum of its proper divisors (424129249498).

565505665988 is a wasteful number, since it uses less digits than its factorization.

565505665988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141376416501 (or 141376416499 counting only the distinct ones).

The product of its (nonzero) digits is 388800000, while the sum is 68.

The spelling of 565505665988 in words is "five hundred sixty-five billion, five hundred five million, six hundred sixty-five thousand, nine hundred eighty-eight".