4×1017

4×1017 is a mathematical expression representing the product of the number 4 and 10 raised to the power of 17. This can be written in scientific notation as 4 x 10^17. In standard numerical form, it is a 4 followed by 17 zeros: 400,000,000,000,000,000. This is a very large number. Its magnitude places it in the realm of quantities found in astrophysics, such as the estimated number of stars in observable galaxies, or in theoretical physics when discussing vast energy scales or particle counts. The number is an integer and a positive real number. It is divisible by 4 and by powers of 10 up to 10^17. It has factors of 2, 5, and combinations thereof. The number is not prime. Understanding numbers of this magnitude is crucial for comprehending concepts in fields that deal with extremely large quantities.