5561728966 has 16 divisors (see below), whose sum is σ = 8555159088. Its totient is φ = 2710153600.

The previous prime is 5561728951. The next prime is 5561729023. The reversal of 5561728966 is 6698271655.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42561 + ... + 113731.

It is an arithmetic number, because the mean of its divisors is an integer number (534697443).

Almost surely, 2^5561728966 is an apocalyptic number.

5561728966 is a deficient number, since it is larger than the sum of its proper divisors (2993430122).

5561728966 is a wasteful number, since it uses less digits than its factorization.

5561728966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72167.

The product of its digits is 5443200, while the sum is 55.

The square root of 5561728966 is about 74577.0002480658. Note that the first 3 decimals coincide. The cubic root of 5561728966 is about 1771.7533952114.

The spelling of 5561728966 in words is "five billion, five hundred sixty-one million, seven hundred twenty-eight thousand, nine hundred sixty-six".