1099511627776

1099511627776 is a decimal integer that equals 2 to the 40th power. It can also be written as 1024 to the 4th power, or in hexadecimal as 0x10000000000. In binary form, it is a 1 followed by 40 zero bits.

In the context of computer storage, 1099511627776 bytes represent 1 tebibyte (TiB), using the IEC binary prefix system. A TiB is defined as 2^40 bytes, so this value is exactly one TiB. This is distinct from the decimal terabyte (TB), which is 10^12 bytes; 1099511627776 bytes is approximately 1.099 decimal terabytes.

The number often appears when discussing storage capacities, memory sizes, or data transfer calculations in computing. It marks a standard binary boundary and is part of the common progression 2^30 (GiB), 2^40 (TiB), and so on. While many consumer products and marketing labels reference TB, some contexts use TiB to avoid confusion between binary and decimal prefixes.

In summary, 1099511627776 bytes equals 2^40 bytes, i.e., exactly 1 TiB. It is a fundamental unit in digital storage and is frequently used to describe large capacities in systems that adopt binary-based measurements.