44000000064 has 112 divisors (see below), whose sum is σ = 129433320000. Its totient is φ = 14657430528.

The previous prime is 44000000059. The next prime is 44000000111. The reversal of 44000000064 is 46000000044.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 43999999983 and 44000000046.

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, 3080812 + ... + 3095060.

Almost surely, 2^44000000064 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 44000000064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64716660000).

44000000064 is an abundant number, since it is smaller than the sum of its proper divisors (85433319936).

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

44000000064 is a wasteful number, since it uses less digits than its factorization.

44000000064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16057 (or 16041 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The spelling of 44000000064 in words is "forty-four billion, sixty-four", and thus it is an aban number and an eban number.