44143420064 has 48 divisors (see below), whose sum is σ = 88874624160. Its totient is φ = 21576533760.

The previous prime is 44143420037. The next prime is 44143420109. The reversal of 44143420064 is 46002434144.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 44143420064.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248807 + ... + 387545.

It is an arithmetic number, because the mean of its divisors is an integer number (1851554670).

Almost surely, 2^44143420064 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 44143420064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44437312080).

44143420064 is an abundant number, since it is smaller than the sum of its proper divisors (44731204096).

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

44143420064 is a wasteful number, since it uses less digits than its factorization.

44143420064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138973 (or 138965 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

The spelling of 44143420064 in words is "forty-four billion, one hundred forty-three million, four hundred twenty thousand, sixty-four".