YOU SAID:

my social security number is very long but i dont actually know how many digits it is

INTO JAPANESE

私の社会保障番号は非常に長いですが、実際には何桁なのかわかりません

BACK INTO ENGLISH

My social security number is very long and I don't know how many digits it actually has

INTO JAPANESE

私の社会保障番号は非常に長く、実際に何桁あるのかわかりません

BACK INTO ENGLISH

My social security number is very long and I don't know how many digits it actually has