diff --git a/src/components/ha-code-editor.ts b/src/components/ha-code-editor.ts
index 8b29c7802a86..228b465f3f6d 100644
--- a/src/components/ha-code-editor.ts
+++ b/src/components/ha-code-editor.ts
@@ -62,6 +62,10 @@ export class HaCodeEditor extends ReactiveElement {
   private _iconList?: Completion[];
 
   public set value(value: string) {
+    const valueAsANumber = value as unknown as number;
+    if (!isNaN(valueAsANumber) && valueAsANumber > Number.MAX_SAFE_INTEGER) {
+      value = '"' + value + '"';
+    }
     this._value = value;
   }