JAVA Program to check if the given value is spy number or not

IsSpyNumber.java

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+import java.math.BigInteger;
+import java.util.Scanner;
+
+public class IsSpyNumber {
+    // Function to check if a number is a spy number
+    public static boolean isSpyNumber(BigInteger num) {
+        BigInteger sumOfDigits = BigInteger.ZERO;
+        BigInteger productOfDigits = BigInteger.ONE;
+        BigInteger ten = BigInteger.TEN;
+
+        while (num.compareTo(BigInteger.ZERO) > 0) {
+            BigInteger[] divRem = num.divideAndRemainder(ten);
+            BigInteger digit = divRem[1];
+            sumOfDigits = sumOfDigits.add(digit);
+            productOfDigits = productOfDigits.multiply(digit);
+            num = divRem[0];
+        }
+
+        return sumOfDigits.equals(productOfDigits);
+    }
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        System.out.print("Enter a number: ");
+        BigInteger number = scanner.nextBigInteger();
+
+        if (isSpyNumber(number)) {
+            System.out.println(number + " is a spy number.");
+        } else {
+            System.out.println(number + " is not a spy number.");
+        }
+    }
+}