44000000018 has 32 divisors (see below), whose sum is σ = 71577305856. Its totient is φ = 20164984128.

The previous prime is 43999999999. The next prime is 44000000021. The reversal of 44000000018 is 81000000044.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43999999942 and 44000000005.

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 15 ways as a sum of consecutive naturals, for example, 4610780 + ... + 4620312.

It is an arithmetic number, because the mean of its divisors is an integer number (2236790808).

Almost surely, 2^44000000018 is an apocalyptic number.

44000000018 is a deficient number, since it is larger than the sum of its proper divisors (27577305838).

44000000018 is a wasteful number, since it uses less digits than its factorization.

44000000018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10778.

The product of its (nonzero) digits is 128, while the sum is 17.

The spelling of 44000000018 in words is "forty-four billion, eighteen", and thus it is an aban number.