The complexity of the algorithm to print the kth least significant bit of a number is O(1).
This is because the algorithm involves simple operations like accessing a specific bit in the binary representation of a number, which can be done in constant time. Regardless of the size of the number, determining the kth least significant bit only requires accessing a specific position in its binary representation, which can be done directly without iterating through all the bits. Therefore, the time complexity remains constant, denoted as O(1).