2044442406644 has 24 divisors (see below), whose sum is σ = 3946880649600. Its totient is φ = 918850518080.

The previous prime is 2044442406637. The next prime is 2044442406653. The reversal of 2044442406644 is 4466042444402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 2044442406595 and 2044442406604.

It is a congruent number.

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, 261033164 + ... + 261040995.

It is an arithmetic number, because the mean of its divisors is an integer number (164453360400).

Almost surely, 2^{2044442406644} is an apocalyptic number.

It is an amenable number.

2044442406644 is a deficient number, since it is larger than the sum of its proper divisors (1902438242956).

2044442406644 is a wasteful number, since it uses less digits than its factorization.

2044442406644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522074263 (or 522074261 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 44.

The spelling of 2044442406644 in words is "two trillion, forty-four billion, four hundred forty-two million, four hundred six thousand, six hundred forty-four".