QUINDECILLION

[quin.de.cil.lion] n, often attrib [L quindecim fifteen (fr. quinque five + decem ten) + E -illion (as in million)--more at ten] (1903): the figure 1 followed by 48 zeroesthe figure 1,000 followed by 15 groups of three zeroes; also, Brit: the figure 1 followed by 30 zeroes: one million to the fifth power