How Do you Pronounce fifteen billion million thousand two hundred fifty nine in english ?

fifteen billion million thousand two hundred fifty nine Pronunciation in english(IPA) :

ˈfɪftiːn ˈbɪljən ˈmɪljən ˈθaʊz(ə)nd tuː ˈhʌndrəd ˈfɪfti nʌɪn