126244697617 has 2 divisors, whose sum is σ = 126244697618. Its totient is φ = 126244697616.

The previous prime is 126244697531. The next prime is 126244697651. The reversal of 126244697617 is 716796442621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103755496321 + 22489201296 = 322111^2 + 149964^2 .

It is a cyclic number.

It is not a de Polignac number, because 126244697617 - 2⁷ = 126244697489 is a prime.

It is not a weakly prime, because it can be changed into another prime (126244697417) 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, 63122348808 + 63122348809.

It is an arithmetic number, because the mean of its divisors is an integer number (63122348809).

Almost surely, 2^126244697617 is an apocalyptic number.

It is an amenable number.

126244697617 is a deficient number, since it is larger than the sum of its proper divisors (1).

126244697617 is an equidigital number, since it uses as much as digits as its factorization.

126244697617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 55.

The spelling of 126244697617 in words is "one hundred twenty-six billion, two hundred forty-four million, six hundred ninety-seven thousand, six hundred seventeen".