The number of suns, or stars, in the universe is incredibly vast and difficult to quantify precisely. Estimates suggest that there are over 100 billion galaxies in the observable universe, and each galaxy can contain billions to trillions of stars. This means there are likely hundreds of billions of trillions (10^23) or more stars in the universe.
To put this in perspective, our own Milky Way galaxy is estimated to contain around 100 billion to 400 billion stars. However, it's important to note that the exact number of stars in the universe is uncertain due to the vastness of space and the limitations of our current observational capabilities.
Furthermore, the term "sun" typically refers specifically to the star at the center of our own solar system. Outside of our solar system, other star systems have their own central stars that may have different names or designations.