5566165644 has 96 divisors (see below), whose sum is σ = 14118773760. Its totient is φ = 1696601088.

The previous prime is 5566165613. The next prime is 5566165711. The reversal of 5566165644 is 4465616655.

It is a junction number, because it is equal to n+sod(n) for n = 5566165593 and 5566165602.

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, 12564487 + ... + 12564929.

It is an arithmetic number, because the mean of its divisors is an integer number (147070560).

Almost surely, 2^5566165644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5566165644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7059386880).

5566165644 is an abundant number, since it is smaller than the sum of its proper divisors (8552608116).

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

5566165644 is a wasteful number, since it uses less digits than its factorization.

5566165644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039 (or 1037 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 48.

The square root of 5566165644 is about 74606.7399368180. The cubic root of 5566165644 is about 1772.2243884393.

The spelling of 5566165644 in words is "five billion, five hundred sixty-six million, one hundred sixty-five thousand, six hundred forty-four".