4000000000000

4000000000000 is a cardinal number that follows 3,999,999,999,999 and precedes 4,000,000,000,001. In decimal notation it is written as 4,000,000,000,000 and in scientific notation as 4 × 10^12. In short-scale English it is called four trillion.

Its prime factorization is 2^14 × 5^12, making it divisible by large powers of two and five. Consequently it is divisible by 2, 4, 8, 16, and higher powers of two, and by 5, 25, 125, etc. It is not divisible by 3, since the sum of its digits equals 4.

If interpreted as bytes, 4,000,000,000,000 bytes are about 3.64 tebibytes (TiB) or 4 decimal terabytes. In time terms, 4 × 10^12 seconds is roughly 127,000 years, illustrating how large the figure is when applied to temporal scales.

Across numerical naming systems, the short scale designates 10^12 as a trillion, whereas the long scale treats 10^12 as a billion and 10^18 as a trillion. Thus 4 × 10^12 equals four trillion in the short scale but appears as four billion in the long scale.

Common contexts for this magnitude include budgeting, large-scale data storage planning, and simulations, where four trillion serves as a convenient benchmark or rounded figure for orders of magnitude. It also often appears as a rough descriptor in economics, science, and infrastructure estimates when discussing very large quantities.