12491770717 has 2 divisors, whose sum is σ = 12491770718. Its totient is φ = 12491770716.

The previous prime is 12491770703. The next prime is 12491770813. The reversal of 12491770717 is 71707719421.

12491770717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6416971236 + 6074799481 = 80106^2 + 77941^2 .

It is a cyclic number.

It is not a de Polignac number, because 12491770717 - 2¹¹ = 12491768669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12491773717) by changing a digit.

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 as a sum of consecutive naturals, namely, 6245885358 + 6245885359.

It is an arithmetic number, because the mean of its divisors is an integer number (6245885359).

Almost surely, 2^12491770717 is an apocalyptic number.

It is an amenable number.

12491770717 is a deficient number, since it is larger than the sum of its proper divisors (1).

12491770717 is an equidigital number, since it uses as much as digits as its factorization.

12491770717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172872, while the sum is 46.

The spelling of 12491770717 in words is "twelve billion, four hundred ninety-one million, seven hundred seventy thousand, seven hundred seventeen".