12749285117 has 2 divisors, whose sum is σ = 12749285118. Its totient is φ = 12749285116.

The previous prime is 12749285069. The next prime is 12749285137. The reversal of 12749285117 is 71158294721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12165869401 + 583415716 = 110299^2 + 24154^2 .

It is an emirp because it is prime and its reverse (71158294721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12749285117 - 2³⁰ = 11675543293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12749285137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6374642558 + 6374642559.

It is an arithmetic number, because the mean of its divisors is an integer number (6374642559).

Almost surely, 2^12749285117 is an apocalyptic number.

It is an amenable number.

12749285117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12749285117 is an equidigital number, since it uses as much as digits as its factorization.

12749285117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 47.

The spelling of 12749285117 in words is "twelve billion, seven hundred forty-nine million, two hundred eighty-five thousand, one hundred seventeen".