5656665616556 has 12 divisors (see below), whose sum is σ = 10481468642568. Its totient is φ = 2661960290112.

The previous prime is 5656665616543. The next prime is 5656665616577. The reversal of 5656665616556 is 6556165666565.

It is a super-2 number, since 2×5656665616556² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (68), and also a Moran number because the ratio is a prime number: 83186259067 = 5656665616556 / (5 + 6 + 5 + 6 + 6 + 6 + 5 + 6 + 1 + 6 + 5 + 5 + 6).

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 3 ways as a sum of consecutive naturals, for example, 41593129466 + ... + 41593129601.

It is an arithmetic number, because the mean of its divisors is an integer number (873455720214).

Almost surely, 2^{5656665616556} is an apocalyptic number.

It is an amenable number.

5656665616556 is a deficient number, since it is larger than the sum of its proper divisors (4824803026012).

5656665616556 is a wasteful number, since it uses less digits than its factorization.

5656665616556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83186259088 (or 83186259086 counting only the distinct ones).

The product of its digits is 874800000, while the sum is 68.

The spelling of 5656665616556 in words is "five trillion, six hundred fifty-six billion, six hundred sixty-five million, six hundred sixteen thousand, five hundred fifty-six".