5556666556 has 24 divisors (see below), whose sum is σ = 11349789696. Its totient is φ = 2330759280.

The previous prime is 5556666523. The next prime is 5556666607. The reversal of 5556666556 is 6556666555.

It is a super-2 number, since 2×5556666556² = 61753086429137802272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5556666497 and 5556666506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2109880 + ... + 2112511.

It is an arithmetic number, because the mean of its divisors is an integer number (472907904).

Almost surely, 2^5556666556 is an apocalyptic number.

It is an amenable number.

5556666556 is an abundant number, since it is smaller than the sum of its proper divisors (5793123140).

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

5556666556 is a wasteful number, since it uses less digits than its factorization.

5556666556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222449 (or 4222447 counting only the distinct ones).

The product of its digits is 24300000, while the sum is 55.

The square root of 5556666556 is about 74543.0516949769. The cubic root of 5556666556 is about 1771.2156688495.

Subtracting 5556666556 from its reverse (6556666555), we obtain a palindrome (999999999).

The spelling of 5556666556 in words is "five billion, five hundred fifty-six million, six hundred sixty-six thousand, five hundred fifty-six".