44445655666 has 24 divisors (see below), whose sum is σ = 67897889280. Its totient is φ = 21820290480.

The previous prime is 44445655619. The next prime is 44445655691. The reversal of 44445655666 is 66655654444.

It is a super-3 number, since 3×44445655666³ (a number of 33 digits) contains 333 as substring.

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 11 ways as a sum of consecutive naturals, for example, 4512375 + ... + 4522213.

It is an arithmetic number, because the mean of its divisors is an integer number (2829078720).

Almost surely, 2^44445655666 is an apocalyptic number.

44445655666 is a deficient number, since it is larger than the sum of its proper divisors (23452233614).

44445655666 is an equidigital number, since it uses as much as digits as its factorization.

44445655666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10570 (or 10509 counting only the distinct ones).

The product of its digits is 41472000, while the sum is 55.

The spelling of 44445655666 in words is "forty-four billion, four hundred forty-five million, six hundred fifty-five thousand, six hundred sixty-six".