44989621656 has 192 divisors, whose sum is σ = 142474464000. Its totient is φ = 11757553920.

The previous prime is 44989621643. The next prime is 44989621709. The reversal of 44989621656 is 65612698944.

44989621656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 44989621656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 613261 + ... + 682691.

It is an arithmetic number, because the mean of its divisors is an integer number (742054500).

Almost surely, 2^44989621656 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 44989621656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71237232000).

44989621656 is an abundant number, since it is smaller than the sum of its proper divisors (97484842344).

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

44989621656 is a wasteful number, since it uses less digits than its factorization.

44989621656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69502 (or 69491 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 60.

The spelling of 44989621656 in words is "forty-four billion, nine hundred eighty-nine million, six hundred twenty-one thousand, six hundred fifty-six".