5005550005566 has 128 divisors (see below), whose sum is σ = 11146230374400. Its totient is φ = 1485932448000.

The previous prime is 5005550005549. The next prime is 5005550005591. The reversal of 5005550005566 is 6655000555005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 507091611 + ... + 507101481.

It is an arithmetic number, because the mean of its divisors is an integer number (87079924800).

Almost surely, 2^{5005550005566} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5005550005566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5573115187200).

5005550005566 is an abundant number, since it is smaller than the sum of its proper divisors (6140680368834).

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

5005550005566 is a wasteful number, since it uses less digits than its factorization.

5005550005566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10766.

The product of its (nonzero) digits is 562500, while the sum is 42.

The spelling of 5005550005566 in words is "five trillion, five billion, five hundred fifty million, five thousand, five hundred sixty-six".