12491366411 has 2 divisors, whose sum is σ = 12491366412. Its totient is φ = 12491366410.

The previous prime is 12491366387. The next prime is 12491366443. The reversal of 12491366411 is 11466319421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12491366411 is a prime.

It is not a weakly prime, because it can be changed into another prime (12491366711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6245683205 + 6245683206.

It is an arithmetic number, because the mean of its divisors is an integer number (6245683206).

Almost surely, 2^12491366411 is an apocalyptic number.

12491366411 is a deficient number, since it is larger than the sum of its proper divisors (1).

12491366411 is an equidigital number, since it uses as much as digits as its factorization.

12491366411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The spelling of 12491366411 in words is "twelve billion, four hundred ninety-one million, three hundred sixty-six thousand, four hundred eleven".