5656166556 has 12 divisors (see below), whose sum is σ = 13197721992. Its totient is φ = 1885388848.

The previous prime is 5656166531. The next prime is 5656166557. The reversal of 5656166556 is 6556616565.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×5656166556² = 63984440218425802272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5656166499 and 5656166508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5656166557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235673595 + ... + 235673618.

It is an arithmetic number, because the mean of its divisors is an integer number (1099810166).

Almost surely, 2^5656166556 is an apocalyptic number.

It is an amenable number.

5656166556 is an abundant number, since it is smaller than the sum of its proper divisors (7541555436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5656166556 is a wasteful number, since it uses less digits than its factorization.

5656166556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471347220 (or 471347218 counting only the distinct ones).

The product of its digits is 4860000, while the sum is 51.

The square root of 5656166556 is about 75207.4900259276. The cubic root of 5656166556 is about 1781.7252300624.

The spelling of 5656166556 in words is "five billion, six hundred fifty-six million, one hundred sixty-six thousand, five hundred fifty-six".