5665556565 has 12 divisors (see below), whose sum is σ = 9820298124. Its totient is φ = 3021630144.

The previous prime is 5665556557. The next prime is 5665556639. The reversal of 5665556565 is 5656555665.

It can be written as a sum of positive squares in 2 ways, for example, as 3106613169 + 2558943396 = 55737^2 + 50586^2 .

It is not a de Polignac number, because 5665556565 - 2³ = 5665556557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62950584 + ... + 62950673.

It is an arithmetic number, because the mean of its divisors is an integer number (818358177).

Almost surely, 2^5665556565 is an apocalyptic number.

It is an amenable number.

5665556565 is a deficient number, since it is larger than the sum of its proper divisors (4154741559).

5665556565 is a wasteful number, since it uses less digits than its factorization.

5665556565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125901268 (or 125901265 counting only the distinct ones).

The product of its digits is 20250000, while the sum is 54.

The square root of 5665556565 is about 75269.8914905555. The cubic root of 5665556565 is about 1782.7106540270.

The spelling of 5665556565 in words is "five billion, six hundred sixty-five million, five hundred fifty-six thousand, five hundred sixty-five".