Excel, like nearly all software, supports only 15 digits of precision.
Anything beyond that is no man's land. If you need to store a longer number
but not perform calculations with it (e.g., a credit card number or phone
number), precede the number with an apostrophe. The apostrophe will not be
visible in the cell but will be visible in the formula bar.


--
Cordially,
Chip Pearson
Microsoft MVP - Excel
Pearson Software Consulting
www.cpearson.com
(email on the web site)

"Dutch" wrote in message
...
When I type in the 16 digits, Excel changes the last digit to 0 so I don't
have a correct number listed.
How can I get it to accept all 16 digits correctly?
Thanks