171212775152149 has 2 divisors, whose sum is σ = 171212775152150. Its totient is φ = 171212775152148.

The previous prime is 171212775152129. The next prime is 171212775152189. The reversal of 171212775152149 is 941251577212171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86608522576900 + 84604252575249 = 9306370^2 + 9198057^2 .

It is an emirp because it is prime and its reverse (941251577212171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171212775152149 - 2³⁵ = 171178415413781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 171212775152149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171212775152129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85606387576074 + 85606387576075.

It is an arithmetic number, because the mean of its divisors is an integer number (85606387576075).

Almost surely, 2^{171212775152149} is an apocalyptic number.

It is an amenable number.

171212775152149 is a deficient number, since it is larger than the sum of its proper divisors (1).

171212775152149 is an equidigital number, since it uses as much as digits as its factorization.

171212775152149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2469600, while the sum is 55.

The spelling of 171212775152149 in words is "one hundred seventy-one trillion, two hundred twelve billion, seven hundred seventy-five million, one hundred fifty-two thousand, one hundred forty-nine".