0x2000000000

0x2000000000 is a hexadecimal integer literal commonly used in computing to denote a large power-of-two value. In decimal, it equals 137,438,953,472, which is 2^37 bytes. This corresponds to 128 gibibytes (GiB) when measured in bytes, since 1 GiB equals 2^30 bytes.

In hexadecimal form, the value is 0x2000000000, consisting of a leading 2 followed by nine zeros. It represents a single set bit at position 37 in binary (counting from zero), making it a power of two. The neighboring powers of two include 0x1000000000 (2^36, 64 GiB) and 0x4000000000 (2^38, 256 GiB).

Common uses for such a constant include representing a memory address, a size or offset, or a boundary in low-level programming and system design. Because it is a power-of-two boundary, it can be convenient for alignment, addressing calculations, or as a scale factor in data structures and memory management discussions. In most modern 64-bit systems, this value easily fits within 64-bit integers and is far below the address space limits of typical architectures.

Notes: the practical interpretation of 0x2000000000 depends on context. It may denote a specific address, a size, or an offset in code, logs, or documentation. As with any hex literal, its meaning is defined by how the value is used within a given software or hardware environment.