bit shift 64

void loop() {
  uint64_t test=1;
  //int test=1;
  Serial.print("Size of test: ");
  Serial.println(sizeof(test)*8);
  for(int j=(sizeof(test)*8); j>-1; --j){
      for(int i=(sizeof(test)*8); i>-1; --i) {
          int bit = bitRead(test,i);
          Serial.print(bit);
      }
      Serial.println();
      test = test << 1;
  }
  Serial.println("---------");
  delay(5000);
}