444555220044 has 72 divisors (see below), whose sum is σ = 1167768410032. Its totient is φ = 130838970240.

The previous prime is 444555220009. The next prime is 444555220099. The reversal of 444555220044 is 440022555444.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 444555219984 and 444555220011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2610967 + ... + 2776014.

Almost surely, 2^444555220044 is an apocalyptic number.

It is an amenable number.

444555220044 is an abundant number, since it is smaller than the sum of its proper divisors (723213189988).

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

444555220044 is a wasteful number, since it uses less digits than its factorization.

444555220044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5387047 (or 5387022 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 39.

Adding to 444555220044 its reverse (440022555444), we get a palindrome (884577775488).

The spelling of 444555220044 in words is "four hundred forty-four billion, five hundred fifty-five million, two hundred twenty thousand, forty-four".