to make a phone call; to telephone; to call

telephone / telephone call; phone call; call

number (on an athlete's uniform's back); jersey number, uniform number, player number, shirt number

(computing) line number

PIN number, PIN

(physics, chemistry) atomic number

(telephony) country code

individual number, personal identification number, social security number

mobile phone number

Alternative spelling of 携帯番号 (keitai bangō)