12663803181266 has 32 divisors (see below), whose sum is σ = 20543260684032. Its totient is φ = 5832008976640.

The previous prime is 12663803181241. The next prime is 12663803181307. The reversal of 12663803181266 is 66218130836621.

It is a happy number.

12663803181266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12663803181266² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14502725 + ... + 15351111.

It is an arithmetic number, because the mean of its divisors is an integer number (641976896376).

Almost surely, 2^{12663803181266} is an apocalyptic number.

12663803181266 is a deficient number, since it is larger than the sum of its proper divisors (7879457502766).

12663803181266 is a wasteful number, since it uses less digits than its factorization.

12663803181266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857794.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 12663803181266 in words is "twelve trillion, six hundred sixty-three billion, eight hundred three million, one hundred eighty-one thousand, two hundred sixty-six".