5665565665556 has 12 divisors (see below), whose sum is σ = 9915156195168. Its totient is φ = 2832663895512.

The previous prime is 5665565665553. The next prime is 5665565665561. The reversal of 5665565665556 is 6555665655665.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 5665565665556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665565665553) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 29627096 + ... + 29817711.

It is an arithmetic number, because the mean of its divisors is an integer number (826263016264).

Almost surely, 2^{5665565665556} is an apocalyptic number.

It is an amenable number.

5665565665556 is a deficient number, since it is larger than the sum of its proper divisors (4249590529612).

5665565665556 is a wasteful number, since it uses less digits than its factorization.

5665565665556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59468638 (or 59468636 counting only the distinct ones).

The product of its digits is 3645000000, while the sum is 71.

The spelling of 5665565665556 in words is "five trillion, six hundred sixty-five billion, five hundred sixty-five million, six hundred sixty-five thousand, five hundred fifty-six".