5561381836 has 48 divisors (see below), whose sum is σ = 10430574336. Its totient is φ = 2585401344.

The previous prime is 5561381827. The next prime is 5561381851. The reversal of 5561381836 is 6381831655.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2076130 + ... + 2078806.

It is an arithmetic number, because the mean of its divisors is an integer number (217303632).

Almost surely, 2^5561381836 is an apocalyptic number.

It is an amenable number.

5561381836 is a deficient number, since it is larger than the sum of its proper divisors (4869192500).

5561381836 is a wasteful number, since it uses less digits than its factorization.

5561381836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058 (or 3056 counting only the distinct ones).

The product of its digits is 518400, while the sum is 46.

The square root of 5561381836 is about 74574.6728856386. The cubic root of 5561381836 is about 1771.7165336793.

The spelling of 5561381836 in words is "five billion, five hundred sixty-one million, three hundred eighty-one thousand, eight hundred thirty-six".