Which number does the social security account number refer to?

Social security account number usually refers to an individual's social security number, usually the ID number of the insured. This number is used to identify the identity of an individual in the social insurance system, so as to enjoy social insurance benefits and carry out related operations. In some cases, the social security account number may also refer to the social security card number, which is a set of numbers on the social security card, but this social security card number is usually based on the ID number. Therefore, the social security account number can basically be understood as an individual's ID number, which is used to handle social insurance-related affairs.