1 Gbtl (Gigabottle) is equal to 1,999,999,999.9999998 half bottles (Half Bottles). To convert from Gigabottle to Half Bottles, multiply by 1,999,999,999.9999998 or divide by 0.0000000005.
One Billion Nine Hundred Ninety-Nine Million Nine Hundred Ninety-Nine Thousand Nine Hundred Ninety-Nine Point Nine Nine Nine Nine Nine Nine Eight Half Bottles