12513187568789 has 2 divisors, whose sum is σ = 12513187568790. Its totient is φ = 12513187568788.

The previous prime is 12513187568723. The next prime is 12513187568851. The reversal of 12513187568789 is 98786578131521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8594601039025 + 3918586529764 = 2931655^2 + 1979542^2 .

It is a cyclic number.

It is not a de Polignac number, because 12513187568789 - 2¹² = 12513187564693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12513187588789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6256593784394 + 6256593784395.

It is an arithmetic number, because the mean of its divisors is an integer number (6256593784395).

Almost surely, 2^{12513187568789} is an apocalyptic number.

It is an amenable number.

12513187568789 is a deficient number, since it is larger than the sum of its proper divisors (1).

12513187568789 is an equidigital number, since it uses as much as digits as its factorization.

12513187568789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 203212800, while the sum is 71.

The spelling of 12513187568789 in words is "twelve trillion, five hundred thirteen billion, one hundred eighty-seven million, five hundred sixty-eight thousand, seven hundred eighty-nine".