5566556655 has 32 divisors (see below), whose sum is σ = 10795749120. Its totient is φ = 2698935840.

The previous prime is 5566556629. The next prime is 5566556693.

5566556655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5566556655 - 2⁶ = 5566556591 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1872777 + ... + 1875746.

It is an arithmetic number, because the mean of its divisors is an integer number (337367160).

Almost surely, 2^5566556655 is an apocalyptic number.

5566556655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5566556655 is a deficient number, since it is larger than the sum of its proper divisors (5229192465).

5566556655 is a wasteful number, since it uses less digits than its factorization.

5566556655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3748548 (or 3748542 counting only the distinct ones).

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

The square root of 5566556655 is about 74609.3603712028. The cubic root of 5566556655 is about 1772.2658857673.

The spelling of 5566556655 in words is "five billion, five hundred sixty-six million, five hundred fifty-six thousand, six hundred fifty-five".