12732437984789 has 2 divisors, whose sum is σ = 12732437984790. Its totient is φ = 12732437984788.

The previous prime is 12732437984779. The next prime is 12732437984801. The reversal of 12732437984789 is 98748973423721.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8648057614564 + 4084380370225 = 2940758^2 + 2020985^2 .

It is an emirp because it is prime and its reverse (98748973423721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12732437984789 - 2²⁰ = 12732436936213 is a prime.

It is a super-2 number, since 2×12732437984789² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12732437984779) 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, 6366218992394 + 6366218992395.

It is an arithmetic number, because the mean of its divisors is an integer number (6366218992395).

Almost surely, 2^{12732437984789} is an apocalyptic number.

It is an amenable number.

12732437984789 is a deficient number, since it is larger than the sum of its proper divisors (1).

12732437984789 is an equidigital number, since it uses as much as digits as its factorization.

12732437984789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1024192512, while the sum is 74.

The spelling of 12732437984789 in words is "twelve trillion, seven hundred thirty-two billion, four hundred thirty-seven million, nine hundred eighty-four thousand, seven hundred eighty-nine".