129808224017 has 2 divisors, whose sum is σ = 129808224018. Its totient is φ = 129808224016.

The previous prime is 129808223959. The next prime is 129808224031. The reversal of 129808224017 is 710422808921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127899932161 + 1908291856 = 357631^2 + 43684^2 .

It is a cyclic number.

It is not a de Polignac number, because 129808224017 - 2¹⁰ = 129808222993 is a prime.

It is not a weakly prime, because it can be changed into another prime (129808224037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64904112008 + 64904112009.

It is an arithmetic number, because the mean of its divisors is an integer number (64904112009).

Almost surely, 2^129808224017 is an apocalyptic number.

It is an amenable number.

129808224017 is a deficient number, since it is larger than the sum of its proper divisors (1).

129808224017 is an equidigital number, since it uses as much as digits as its factorization.

129808224017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 129808224017 in words is "one hundred twenty-nine billion, eight hundred eight million, two hundred twenty-four thousand, seventeen".