Farabello has represented Argentina in several international competitions. He won the bronze medal at the 2018 FIBA Under-18 Americas Championship. Farabello averaged 8.3 points, 5.3 assists, and 4.3 rebounds per game during the tournament. He was selected to participate in the 2019 FIBA Under-19 Basketball World Cup. Farabello averaged 6.4 points, 4 assists, and 3.7 rebounds per game.