12566270117 has 2 divisors, whose sum is σ = 12566270118. Its totient is φ = 12566270116.

The previous prime is 12566269997. The next prime is 12566270131. The reversal of 12566270117 is 71107266521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9535327201 + 3030942916 = 97649^2 + 55054^2 .

It is a cyclic number.

It is not a de Polignac number, because 12566270117 - 2²⁰ = 12565221541 is a prime.

It is a super-2 number, since 2×12566270117² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12566270177) 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, 6283135058 + 6283135059.

It is an arithmetic number, because the mean of its divisors is an integer number (6283135059).

Almost surely, 2^12566270117 is an apocalyptic number.

It is an amenable number.

12566270117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12566270117 is an equidigital number, since it uses as much as digits as its factorization.

12566270117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 12566270117 in words is "twelve billion, five hundred sixty-six million, two hundred seventy thousand, one hundred seventeen".