Problem 656. Calculate Euler's phi function

Compute the Euler's phi function of a large integer.

For more information about this topic please visit: Euler's totient function.

With these constraints:

  • n is a nonnegative integer greater than 0.
  • "large integer" means 32bit integer
  • vectorized Input

Examples:

  1. eulerphi(4) = 2
  2. eulerphi(11) = 10
Solve

Solution Stats

29.78% Correct | 70.22% Incorrect
Last Solution submitted on Dec 05, 2025

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