4021444444444 has 48 divisors (see below), whose sum is σ = 8452958169600. Its totient is φ = 1636682389056.

The previous prime is 4021444444439. The next prime is 4021444444463. The reversal of 4021444444444 is 4444444441204.

4021444444444 is a modest number, since divided by 4444444 gives 402144 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 4021444444444.

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, 22372639 + ... + 22551670.

It is an arithmetic number, because the mean of its divisors is an integer number (176103295200).

Almost surely, 2^{4021444444444} is an apocalyptic number.

It is an amenable number.

4021444444444 is an abundant number, since it is smaller than the sum of its proper divisors (4431513725156).

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

4021444444444 is a wasteful number, since it uses less digits than its factorization.

4021444444444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44924482 (or 44924480 counting only the distinct ones).

The product of its (nonzero) digits is 2097152, while the sum is 43.

Adding to 4021444444444 its reverse (4444444441204), we get a palindrome (8465888885648).

The spelling of 4021444444444 in words is "four trillion, twenty-one billion, four hundred forty-four million, four hundred forty-four thousand, four hundred forty-four".