44198540064 has 144 divisors (see below), whose sum is σ = 143888209920. Its totient is φ = 12606796800.

The previous prime is 44198540041. The next prime is 44198540077. The reversal of 44198540064 is 46004589144.

44198540064 is a `hidden beast` number, since 4 + 41 + 9 + 8 + 540 + 0 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1193377 + ... + 1229855.

It is an arithmetic number, because the mean of its divisors is an integer number (999223680).

Almost surely, 2^44198540064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44198540064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71944104960).

44198540064 is an abundant number, since it is smaller than the sum of its proper divisors (99689669856).

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

44198540064 is a wasteful number, since it uses less digits than its factorization.

44198540064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37103 (or 37092 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 44198540064 in words is "forty-four billion, one hundred ninety-eight million, five hundred forty thousand, sixty-four".