9×1016

9×10^16 is the product of nine and ten raised to the sixteenth power. In decimal form it equals 90,000,000,000,000,000. In prime factorization, it can be written as 2^16 × 3^2 × 5^16, reflecting the decomposition of 10^16 multiplied by 9.

The number is commonly used in scientific contexts to express very large magnitudes without writing many zeros. It appears in calculations across physics and astronomy where distances, times, or quantities are large enough to benefit from scientific notation.

In astronomy and related fields, 9×10^16 meters is a practical scale for interstellar distances: it is approximately 9.5 light-years, about 2.92 parsecs. This illustrates how large powers of ten translate into everyday astronomical units. If interpreted as a time quantity, 9×10^16 seconds is about 2.85×10^9 years (2.85 billion years), a timescale relevant to cosmological and geological contexts.

Notation considerations note that some texts write 9×1016 in plain text to mean 9×10^16; however, the standard and unambiguous form is 9×10^16 or 9e16. Readers should verify the intended meaning when encountering ambiguous notation, especially in environments where superscripts or exponents are not clearly rendered.

Overall, 9×10^16 serves as a representative example of how large-scale quantities are managed in scientific practice, enabling concise communication of measurements that would otherwise require unwieldy strings of zeros.