This is a multilingual generalized follow-on to "What number is that? Asks Grandpa", which I restate as:
"What is the smallest positive English integer N, for which if you take its WORD anagram and subtract the number N itself, you get some positive integer quantity:
Anagram of the number - number > zero
- Hence the smallest legal number in English would be 76 (SEVENTY-SIX), since 67 (SIXTY-SEVEN) is also a legal number, and 76 - 67 is positive. (Doesn't work for TWENTY, THIRTY, FORTY, FIFTY since their tens-multiple is spelled differently to their units number. And of course teens are irregular in most languages).
- No archaic spellings, e.g. 'FOURTY' is not allowed.
- In order to keep this objective we probably have to exclude numerical terms like 'OVER-FIFTY', 'DUO', 'DECADE', 'DOZEN', 'CENTURY', 'MYRIAD' etc., let alone subjective/cryptic ones like 'SENIOR' = OVER-FIFTY-FIVE, 'TEENAGER' = $<$your choice of number between 13..19$>$
- and ZERO/NULL/NUL/NOTHING/NIX/... probably has a very high number of subjective/cryptic synonyms.
- Ignoring hyphens
- Either ignoring accents, or optionally using their accepted ASCII transliterations, e.g. 'ä' -> AE,'ø' -> OE, 'ß' -> SS
So what's the smallest such positive integer in French? German? Spanish? Italian? Dutch? Swedish? Esperanto? etc.