Ten digit number

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First saw this as a puzzle from Template:Cartalk link, where it is attributed to Martin Gardner.

Puzzle

Find what is unique about this number: 8,549,176,320.

Help

Hint
This is similar to the next letter puzzle
Answer
It is the only ten digit number which has all ten digits (0-9) in alphabetical order

References

Car Talk Puzzler - sometimes automotive, sometimes more math/logic based. Books by Martin Gardner - perhaps the greatest contributer to mathematical puzzles ever.

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