fix large number in balance view card

apps/block_scout_web/assets/js/lib/currency.js

@@ -18,6 +18,7 @@ function formatCurrencyValue (value, symbol) {
   if (value < 0.000001) return `${window.localized['Less than']} ${symbol}0.000001`
   if (value < 1) return `${symbol}${numeral(value).format('0.000000')}`
   if (value < 100000) return `${symbol}${numeral(value).format('0,0.00')}`
+  if (value > 1000000000) return `${symbol}${numeral(value).format('0.000e+0')}`
   return `${symbol}${numeral(value).format('0,0')}`
 }
 

apps/block_scout_web/lib/block_scout_web/views/wei_helpers.ex

@@ -57,13 +57,19 @@ defmodule BlockScoutWeb.WeiHelpers do
     converted_value =
       wei
       |> Wei.to(unit)
-      |> Cldr.Number.to_string!(format: "#,##0.##################")
+
+    formatted_value =
+      if converted_value > 1_000_000_000_000 do
+        Cldr.Number.to_string!(converted_value, format: "0.###E+0")
+      else
+        Cldr.Number.to_string!(converted_value, format: "#,##0.##################")
+      end
 
     if Keyword.get(options, :include_unit_label, true) do
       display_unit = display_unit(unit)
-      "#{converted_value} #{display_unit}"
+      "#{formatted_value} #{display_unit}"
     else
-      converted_value
+      formatted_value
     end
   end