12739184648 has 8 divisors (see below), whose sum is σ = 23885971230. Its totient is φ = 6369592320.

The previous prime is 12739184621. The next prime is 12739184683. The reversal of 12739184648 is 84648193721.

It can be written as a sum of positive squares in only one way, i.e., 12732414244 + 6770404 = 112838^2 + 2602^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12739184648.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 796199033 + ... + 796199048.

Almost surely, 2^12739184648 is an apocalyptic number.

It is an amenable number.

12739184648 is a deficient number, since it is larger than the sum of its proper divisors (11146786582).

12739184648 is a wasteful number, since it uses less digits than its factorization.

12739184648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592398087 (or 1592398083 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 53.

The spelling of 12739184648 in words is "twelve billion, seven hundred thirty-nine million, one hundred eighty-four thousand, six hundred forty-eight".