Yes, 46361226.dk can receive emails.
Yes, 46361226.dk seems to be a legitimate domain.
A record
178.20.216.113
MX records
alt1.aspmx.l.google.com
64.233.186.26
alt2.aspmx.l.google.com
209.85.202.27
aspmx.l.google.com
172.217.197.26
aspmx2.googlemail.com
64.233.186.26
aspmx3.googlemail.com
209.85.202.26