12938287585684 has 24 divisors (see below), whose sum is σ = 22868667903816. Its totient is φ = 6404396400000.

The previous prime is 12938287585681. The next prime is 12938287585787. The reversal of 12938287585684 is 48658578283921.

It can be written as a sum of positive squares in 4 ways, for example, as 5065650490000 + 7872637095684 = 2250700^2 + 2805822^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12938287585684.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12938287585681) 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 in 7 ways as a sum of consecutive naturals, for example, 1988734 + ... + 5461834.

It is an arithmetic number, because the mean of its divisors is an integer number (952861162659).

Almost surely, 2^{12938287585684} is an apocalyptic number.

It is an amenable number.

12938287585684 is a deficient number, since it is larger than the sum of its proper divisors (9930380318132).

12938287585684 is a wasteful number, since it uses less digits than its factorization.

12938287585684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482427 (or 3482425 counting only the distinct ones).

The product of its digits is 1857945600, while the sum is 76.

The spelling of 12938287585684 in words is "twelve trillion, nine hundred thirty-eight billion, two hundred eighty-seven million, five hundred eighty-five thousand, six hundred eighty-four".