12805549417 has 2 divisors, whose sum is σ = 12805549418. Its totient is φ = 12805549416.

The previous prime is 12805549411. The next prime is 12805549423. The reversal of 12805549417 is 71494550821.

It is a balanced prime because it is at equal distance from previous prime (12805549411) and next prime (12805549423).

It can be written as a sum of positive squares in only one way, i.e., 10238201856 + 2567347561 = 101184^2 + 50669^2 .

It is a cyclic number.

It is not a de Polignac number, because 12805549417 - 2¹¹ = 12805547369 is a prime.

It is not a weakly prime, because it can be changed into another prime (12805549411) 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, 6402774708 + 6402774709.

It is an arithmetic number, because the mean of its divisors is an integer number (6402774709).

Almost surely, 2^12805549417 is an apocalyptic number.

It is an amenable number.

12805549417 is a deficient number, since it is larger than the sum of its proper divisors (1).

12805549417 is an equidigital number, since it uses as much as digits as its factorization.

12805549417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 12805549417 in words is "twelve billion, eight hundred five million, five hundred forty-nine thousand, four hundred seventeen".