According to BoL
2^63 (-9,223,372,036,854,775,808) to 2^63-1 (9,223,372,036,854,775,807)
So, no it will not store 9223372036854775808, as that's 1 higher than the max value allowed.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability
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