168908750029 has 2 divisors, whose sum is σ = 168908750030. Its totient is φ = 168908750028.

The previous prime is 168908749993. The next prime is 168908750057. The reversal of 168908750029 is 920057809861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122834127529 + 46074622500 = 350477^2 + 214650^2 .

It is an emirp because it is prime and its reverse (920057809861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168908750029 - 2⁹ = 168908749517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168908750069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84454375014 + 84454375015.

It is an arithmetic number, because the mean of its divisors is an integer number (84454375015).

Almost surely, 2^168908750029 is an apocalyptic number.

It is an amenable number.

168908750029 is a deficient number, since it is larger than the sum of its proper divisors (1).

168908750029 is an equidigital number, since it uses as much as digits as its factorization.

168908750029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 168908750029 in words is "one hundred sixty-eight billion, nine hundred eight million, seven hundred fifty thousand, twenty-nine".