The carrier for this number is probably SFR
In NATIONAL format, aka ITU-T Recommendation E123, the number is written 06 13 64 71 78
Likewise, in E123 INTERNATIONAL formal, it is written +33 6 13 64 71 78
In E.164 standard format, the number is written +33613647178. E164 format is as per E123 INTERNATIONAL format but with no formatting applied.
In RFC3966 standard format, the number is written tel:+33-6-13-64-71-78. FC3966 is as per INTERNATIONAL format, but with all spaces and other separating symbols replaced with a hyphen, and with any phone number extension appended with ";ext=". It also will have a prefix of "tel:" added .
To dial this number from within the United States, one would dial 011 33 6 13 64 71 78
To dial this number from inside the United Kingdom or the European Union, one would dial 00 33 6 13 64 71 78
Numbers like +33613647178 may be located in the Europe/Paris timezone, where the local time is currently Tuesday the 29th of November 2022 10:31:08 PM.