undecillion

/ˌʌndɪˈsɪliən/
noun
  1. The number represented by 1 followed by 36 zeros (10^36) in the American system, or 1 followed by 66 zeros (10^66) in the British system.
    • The national debt will never reach a undecillion dollars.
    • A undecillion is an incredibly large number, rarely used in everyday life.
    • Scientists might talk about undecillions when measuring distances in the universe.
adjective
  1. Amounting to one undecillion in number.
    • There are undecillion stars in the observable universe, according to some estimates.
    • No one can truly imagine an undecillion grains of sand.
    • The computer processed undecillion calculations per second in the simulation.
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