Pronunciation IPA (key): /ˌkwɪndɪˈsɪɫjən/ Audio (US)(file) Determiner Determinerquindecillion (number) (ordinal quindecillionth) The number 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 Noun Singular quindecillion Plural quindecillions The number 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 One thousand quattuordecillion is a quindecillion.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads