The function of a virtual credit card is the same as that of a common physical bank card, and the only difference between them is whether the card is physical or not.
VISA is a 16 digit card number, which generally starts with 4, and the card number is embossed in front of the card. The top six represent the issuing bank BINNO. Seven digits and twelve digits indicate the serial number of the card. Thirteen represents the main card or the auxiliary card.