126708266317 has 2 divisors, whose sum is σ = 126708266318. Its totient is φ = 126708266316.

The previous prime is 126708266309. The next prime is 126708266323. The reversal of 126708266317 is 713662807621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116786911081 + 9921355236 = 341741^2 + 99606^2 .

It is a cyclic number.

It is not a de Polignac number, because 126708266317 - 2³ = 126708266309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126708266387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63354133158 + 63354133159.

It is an arithmetic number, because the mean of its divisors is an integer number (63354133159).

Almost surely, 2^126708266317 is an apocalyptic number.

It is an amenable number.

126708266317 is a deficient number, since it is larger than the sum of its proper divisors (1).

126708266317 is an equidigital number, since it uses as much as digits as its factorization.

126708266317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 126708266317 in words is "one hundred twenty-six billion, seven hundred eight million, two hundred sixty-six thousand, three hundred seventeen".