12663974824 has 8 divisors (see below), whose sum is σ = 23744952810. Its totient is φ = 6331987408.

The previous prime is 12663974821. The next prime is 12663974861. The reversal of 12663974824 is 42847936621.

It can be written as a sum of positive squares in only one way, i.e., 6732202500 + 5931772324 = 82050^2 + 77018^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12663974821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 791498419 + ... + 791498434.

Almost surely, 2^12663974824 is an apocalyptic number.

It is an amenable number.

12663974824 is a deficient number, since it is larger than the sum of its proper divisors (11080977986).

12663974824 is a wasteful number, since it uses less digits than its factorization.

12663974824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582996859 (or 1582996855 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 52.

The spelling of 12663974824 in words is "twelve billion, six hundred sixty-three million, nine hundred seventy-four thousand, eight hundred twenty-four".