A quick google came up with 20 B-2s were built - I suppose that is close? (132 were originaly budgeted).
That number is not accurate.
I wonder which one went down?
Designation Tail # Formal name
AV-1 82-1066 Spirit of America
AV-2 82-1067 Spirit of Arizona
AV-3 82-1068 Spirit of New York
AV-4 82-1069 Spirit of Indiana
AV-5 82-1070 Spirit of Ohio
AV-6 82-1071 Spirit of Mississippi
AV-7 88-0328 Spirit of Texas
AV-8 88-0329 Spirit of Missouri
AV-9 88-0330 Spirit of California
AV-10 88-0331 Spirit of South Carolina
AV-11 88-0332 Spirit of Washington
AV-12 89-0127 Spirit of Kansas
AV-13 89-0128 Spirit of Nebraska
AV-14 89-0129 Spirit of Georgia
AV-15 90-0040 Spirit of Alaska
AV-16 90-0041 Spirit of Hawaii
AV-17 92-0700 Spirit of Florida
AV-18 93-1085 Spirit of Oklahoma
AV-19 93-1086 Spirit of Kitty Hawk
AV-20 93-1087 Spirit of Pennsylvania
AV-21 93-1088 Spirit of Louisiana
AV-22AV-165 canceled