5565944440 has 32 divisors (see below), whose sum is σ = 14312429280. Its totient is φ = 1908323712.

The previous prime is 5565944437. The next prime is 5565944441. The reversal of 5565944440 is 444495655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5565944441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9938907 + ... + 9939466.

It is an arithmetic number, because the mean of its divisors is an integer number (447263415).

Almost surely, 2^5565944440 is an apocalyptic number.

It is an amenable number.

5565944440 is an abundant number, since it is smaller than the sum of its proper divisors (8746484840).

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

5565944440 is a wasteful number, since it uses less digits than its factorization.

5565944440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19878391 (or 19878387 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 46.

The square root of 5565944440 is about 74605.2574554904. The cubic root of 5565944440 is about 1772.2009115767.

The spelling of 5565944440 in words is "five billion, five hundred sixty-five million, nine hundred forty-four thousand, four hundred forty".