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All over the world, Эйлер (Euler , Eiler , Eyler ) is quite a common masculine first name. The first name Эйлер is habitual in Peru, where it is quite a rare boy's name, Brazil, and Denmark, where it is a rare male name. Measured by absolute frequency, this name is the most popular in Latin America and the Caribbean, particularly Brazil, Peru, and Colombia. Likewise, Эйлер is the last name as well as the forename.
Эйлер is also a name for the fictitious and mythical characters: Eiler , the operatic character in the opera Der Schauspieldirektor by Wolfgang Amadeus Mozart; a banker.