6643422103 has 2 divisors, whose sum is σ = 6643422104. Its totient is φ = 6643422102.

The previous prime is 6643422101. The next prime is 6643422119. The reversal of 6643422103 is 3012243466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6643422103 - 2¹ = 6643422101 is a prime.

Together with 6643422101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6643422101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3321711051 + 3321711052.

It is an arithmetic number, because the mean of its divisors is an integer number (3321711052).

Almost surely, 2^6643422103 is an apocalyptic number.

6643422103 is a deficient number, since it is larger than the sum of its proper divisors (1).

6643422103 is an equidigital number, since it uses as much as digits as its factorization.

6643422103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 6643422103 is about 81507.1904987529. The cubic root of 6643422103 is about 1879.8821133829.

Adding to 6643422103 its reverse (3012243466), we get a palindrome (9655665569).

The spelling of 6643422103 in words is "six billion, six hundred forty-three million, four hundred twenty-two thousand, one hundred three".