12663584671688 has 8 divisors (see below), whose sum is σ = 23744221259430. Its totient is φ = 6331792335840.

The previous prime is 12663584671643. The next prime is 12663584671693. The reversal of 12663584671688 is 88617648536621.

12663584671688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10243699534084 + 2419885137604 = 3200578^2 + 1555598^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×12663584671688² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 791474041973 + ... + 791474041988.

Almost surely, 2^{12663584671688} is an apocalyptic number.

It is an amenable number.

12663584671688 is a deficient number, since it is larger than the sum of its proper divisors (11080636587742).

12663584671688 is a wasteful number, since it uses less digits than its factorization.

12663584671688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582948083967 (or 1582948083963 counting only the distinct ones).

The product of its digits is 557383680, while the sum is 71.

The spelling of 12663584671688 in words is "twelve trillion, six hundred sixty-three billion, five hundred eighty-four million, six hundred seventy-one thousand, six hundred eighty-eight".