When i try to download splunk results into CSV below values are getting converted
Expected_Value Converted_Value
01274554801520977569 1.27455E+18
This is your excel software making the conversion not splunk. You can open the downloaded csv in notepad and see the numbers are fine there.
That being said, you can select that column in excel, and change the format to “number” with however many decimal places you need.
I hope that helps.