SecurityFeaturesDetails on. Back. 1. 2. 1. 2. Bank routing transit number (RTN): This is the. The account number is issued once your bank account with Wells Fargo is created. It is a unique ten-digit number that belongs to the account owner. Your account. If you have a checkbook available, the Wells Fargo routing transit number and account number can be easily found at the bottom of a check. On personal checks.