16 bits. Brazil's full name is the Federal Republic of Brazil (the Federal Republic of Brazil). It is located in the southeastern part of South America and covers an area of ??8.51 million square kilometers, accounting for approximately 46% of the total area of ??South America. 16-digit Brazilian credit card. Credit cards are special carrier cards issued by commercial banks to individuals and organizations. They can shop and consume with special organizations and deposit and withdraw cash from banks. They have consumer credit.