5665161556568 has 32 divisors (see below), whose sum is σ = 10871466790800. Its totient is φ = 2766131157888.

The previous prime is 5665161556553. The next prime is 5665161556603. The reversal of 5665161556568 is 8656551615665.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 55163 + ... + 3366506.

Almost surely, 2^{5665161556568} is an apocalyptic number.

It is an amenable number.

5665161556568 is a deficient number, since it is larger than the sum of its proper divisors (5206305234232).

5665161556568 is a wasteful number, since it uses less digits than its factorization.

5665161556568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3426531 (or 3426527 counting only the distinct ones).

The product of its digits is 194400000, while the sum is 65.

The spelling of 5665161556568 in words is "five trillion, six hundred sixty-five billion, one hundred sixty-one million, five hundred fifty-six thousand, five hundred sixty-eight".