12461436559487 has 2 divisors, whose sum is σ = 12461436559488. Its totient is φ = 12461436559486.

The previous prime is 12461436559477. The next prime is 12461436559499. The reversal of 12461436559487 is 78495563416421.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (78495563416421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12461436559487 is a prime.

It is a super-2 number, since 2×12461436559487² (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 (12461436559447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6230718279743 + 6230718279744.

It is an arithmetic number, because the mean of its divisors is an integer number (6230718279744).

Almost surely, 2^{12461436559487} is an apocalyptic number.

12461436559487 is a deficient number, since it is larger than the sum of its proper divisors (1).

12461436559487 is an equidigital number, since it uses as much as digits as its factorization.

12461436559487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174182400, while the sum is 65.

The spelling of 12461436559487 in words is "twelve trillion, four hundred sixty-one billion, four hundred thirty-six million, five hundred fifty-nine thousand, four hundred eighty-seven".