0o13776
0o13776 is an octal integer literal. The prefix 0o indicates that the digits that follow are interpreted in base 8. The digits 1, 3, 7, 7, and 6 form a valid octal sequence. In decimal, this value equals 6142, and in hexadecimal it equals 0x17FE. A binary representation (without leading zeros) is 1011111111110.
In programming, 0o13776 is read as an integer value with octal base in languages that support the
A common related context is Unix-like file permissions, which are often expressed in octal. In that context,