0511 87 9898 98 -

or 0511 87989898 (as a single block after the area code)

But if you want to keep it readable for local dialing in Germany: 0511 87 9898 98

The proper formatting for the phone number depends on the country/region you're in. or 0511 87989898 (as a single block after

+49 511 87989898