6444428244446 has 16 divisors (see below), whose sum is σ = 9709179912000. Its totient is φ = 3208040750208.

The previous prime is 6444428244421. The next prime is 6444428244479.

6444428244446 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6444428244391 and 6444428244400.

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, 772226 + ... + 3672218.

It is an arithmetic number, because the mean of its divisors is an integer number (606823744500).

Almost surely, 2^{6444428244446} is an apocalyptic number.

6444428244446 is a deficient number, since it is larger than the sum of its proper divisors (3264751667554).

6444428244446 is a wasteful number, since it uses less digits than its factorization.

6444428244446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904883.

The product of its digits is 75497472, while the sum is 56.

It can be divided in two parts, 644442 and 8244446, that added together give a palindrome (8888888).

The spelling of 6444428244446 in words is "six trillion, four hundred forty-four billion, four hundred twenty-eight million, two hundred forty-four thousand, four hundred forty-six".