12400124526817 has 2 divisors, whose sum is σ = 12400124526818. Its totient is φ = 12400124526816.

The previous prime is 12400124526809. The next prime is 12400124526841. The reversal of 12400124526817 is 71862542100421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7076578913856 + 5323545612961 = 2660184^2 + 2307281^2 .

It is a cyclic number.

It is not a de Polignac number, because 12400124526817 - 2³ = 12400124526809 is a prime.

It is not a weakly prime, because it can be changed into another prime (12400124526847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200062263408 + 6200062263409.

It is an arithmetic number, because the mean of its divisors is an integer number (6200062263409).

Almost surely, 2^{12400124526817} is an apocalyptic number.

It is an amenable number.

12400124526817 is a deficient number, since it is larger than the sum of its proper divisors (1).

12400124526817 is an equidigital number, since it uses as much as digits as its factorization.

12400124526817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 12400124526817 in words is "twelve trillion, four hundred billion, one hundred twenty-four million, five hundred twenty-six thousand, eight hundred seventeen".