5556166109 has 16 divisors (see below), whose sum is σ = 6082747440. Its totient is φ = 5044446720.

The previous prime is 5556166093. The next prime is 5556166157. The reversal of 5556166109 is 9016616555.

5556166109 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 830016100 + 4726150009 = 28810^2 + 68747^2 .

It is a cyclic number.

It is not a de Polignac number, because 5556166109 - 2⁴ = 5556166093 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5556166109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5556166199) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 179819 + ... + 208439.

It is an arithmetic number, because the mean of its divisors is an integer number (380171715).

Almost surely, 2^5556166109 is an apocalyptic number.

It is an amenable number.

5556166109 is a deficient number, since it is larger than the sum of its proper divisors (526581331).

5556166109 is a wasteful number, since it uses less digits than its factorization.

5556166109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28880.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 5556166109 is about 74539.6948544868. The cubic root of 5556166109 is about 1771.1624939127.

The spelling of 5556166109 in words is "five billion, five hundred fifty-six million, one hundred sixty-six thousand, one hundred nine".