44420321660 has 144 divisors (see below), whose sum is σ = 110429373600. Its totient is φ = 14878356480.

The previous prime is 44420321633. The next prime is 44420321707. The reversal of 44420321660 is 6612302444.

44420321660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 22790366 + ... + 22792314.

It is an arithmetic number, because the mean of its divisors is an integer number (766870650).

Almost surely, 2^44420321660 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 44420321660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55214686800).

44420321660 is an abundant number, since it is smaller than the sum of its proper divisors (66009051940).

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

44420321660 is a wasteful number, since it uses less digits than its factorization.

44420321660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608 (or 2593 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 44420321660 in words is "forty-four billion, four hundred twenty million, three hundred twenty-one thousand, six hundred sixty".