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Trisghkaidekaphobia is fear of the number 13, it is a superstition and related to a specific fear of Friday the 13th , called paraskevidekatriaphobia or friggatriskaidekaphobia.
Yes there is, like: Arithmophobia - numbers in general Hexakosioihexekontahexaphobia - 666 Tetraphobia - 4 Terdekaphobia or Triskadekaphobia- 13