calculation puzzle - Find the longest arithmetic expression with value equal to number of letters in its english representation

The expression twenty minus five has 15 letters (we ignore spaces) and also has the arithmetic value of 15.

You can use standard math constants, operators and functions, represented by english words. Spaces and parenthesis do not count towards the expression length.

Find the longest such expression.

EDIT: As correctly states in https://puzzling.stackexchange.com/a/6304/7403, no such exists, so only bonus now remains.

As a bonus, find the most interesting such expression.

Answer

There is no determinate result to this question.

plus twenty minus two: equals 18, 18 letters

plus twenty minus two plus twenty minus two: equals 36, 36 letters

plus twenty minus two plus twenty minus two plus twenty minus two: equals 54, 54 letters

and so on...