6444442111 has 2 divisors, whose sum is σ = 6444442112. Its totient is φ = 6444442110.

The previous prime is 6444442079. The next prime is 6444442141. The reversal of 6444442111 is 1112444446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6444442111 - 2⁵ = 6444442079 is a prime.

It is a nialpdrome in base 10.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6444442141) by changing a digit.

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 as a sum of consecutive naturals, namely, 3222221055 + 3222221056.

It is an arithmetic number, because the mean of its divisors is an integer number (3222221056).

Almost surely, 2^6444442111 is an apocalyptic number.

6444442111 is a deficient number, since it is larger than the sum of its proper divisors (1).

6444442111 is an equidigital number, since it uses as much as digits as its factorization.

6444442111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12288, while the sum is 31.

The square root of 6444442111 is about 80277.2826582963. The cubic root of 6444442111 is about 1860.9231659479.

Adding to 6444442111 its reverse (1112444446), we get a palindrome (7556886557).

The spelling of 6444442111 in words is "six billion, four hundred forty-four million, four hundred forty-two thousand, one hundred eleven".