4021444444443 has 4 divisors (see below), whose sum is σ = 5361925925928. Its totient is φ = 2680962962960.

The previous prime is 4021444444439. The next prime is 4021444444463. The reversal of 4021444444443 is 3444444441204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4021444444443 - 2² = 4021444444439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4021444444395 and 4021444444404.

It is not an unprimeable number, because it can be changed into a prime (4021444444463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670240740738 + ... + 670240740743.

It is an arithmetic number, because the mean of its divisors is an integer number (1340481481482).

Almost surely, 2^{4021444444443} is an apocalyptic number.

4021444444443 is a deficient number, since it is larger than the sum of its proper divisors (1340481481485).

4021444444443 is a wasteful number, since it uses less digits than its factorization.

4021444444443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340481481484.

The product of its (nonzero) digits is 1572864, while the sum is 42.

Adding to 4021444444443 its reverse (3444444441204), we get a palindrome (7465888885647).

The spelling of 4021444444443 in words is "four trillion, twenty-one billion, four hundred forty-four million, four hundred forty-four thousand, four hundred forty-three".