12735748646 has 8 divisors (see below), whose sum is σ = 19934215344. Its totient is φ = 6091010200.

The previous prime is 12735748633. The next prime is 12735748661. The reversal of 12735748646 is 64684753721.

12735748646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138432005 + ... + 138432096.

It is an arithmetic number, because the mean of its divisors is an integer number (2491776918).

Almost surely, 2^12735748646 is an apocalyptic number.

12735748646 is a deficient number, since it is larger than the sum of its proper divisors (7198466698).

12735748646 is a wasteful number, since it uses less digits than its factorization.

12735748646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276864126.

The product of its digits is 6773760, while the sum is 53.

The spelling of 12735748646 in words is "twelve billion, seven hundred thirty-five million, seven hundred forty-eight thousand, six hundred forty-six".