444390018816 has 144 divisors (see below), whose sum is σ = 1204659231104. Its totient is φ = 145398730752.

The previous prime is 444390018791. The next prime is 444390018833. The reversal of 444390018816 is 618810093444.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 14546790 + ... + 14577306.

Almost surely, 2^444390018816 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 444390018816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (602329615552).

444390018816 is an abundant number, since it is smaller than the sum of its proper divisors (760269212288).

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

444390018816 is a wasteful number, since it uses less digits than its factorization.

444390018816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30886 (or 30872 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 444390018816 in words is "four hundred forty-four billion, three hundred ninety million, eighteen thousand, eight hundred sixteen".