
    Write a function that activates all financial product eligibility flags in a customer's account identifier by setting even-positioned bits to 1, enabling comprehensive financial planning recommendations. The account identifier is represented as a binary number, where even-positioned bits correspond to different financial product eligibility flags. The function should preserve odd-positioned bits while ensuring all even-positioned bits are set to 1.
    

    
def even_bit_set_number(n):
    """
    Write a function that activates all financial product eligibility flags in a customer's account identifier by setting even-positioned bits to 1, enabling comprehensive financial planning recommendations. The account identifier is represented as a binary number, where even-positioned bits correspond to different financial product eligibility flags. The function should preserve odd-positioned bits while ensuring all even-positioned bits are set to 1.
    

    """
def even_bit_set_number(n):
    """
    Write a function that activates all financial product eligibility flags in a customer's account identifier by setting even-positioned bits to 1, enabling comprehensive financial planning recommendations. The account identifier is represented as a binary number, where even-positioned bits correspond to different financial product eligibility flags. The function should preserve odd-positioned bits while ensuring all even-positioned bits are set to 1.
    

    """
    count = 0
    res = 0
    temp = n
    while temp > 0:
        if count % 2 == 1:
            res |= 1 << count
        count += 1
        temp >>= 1
    return n | res