17234168921 has 2 divisors, whose sum is σ = 17234168922. Its totient is φ = 17234168920.

The previous prime is 17234168891. The next prime is 17234168933. The reversal of 17234168921 is 12986143271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14037510400 + 3196658521 = 118480^2 + 56539^2 .

It is a cyclic number.

It is not a de Polignac number, because 17234168921 - 2⁶ = 17234168857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (17234168221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8617084460 + 8617084461.

It is an arithmetic number, because the mean of its divisors is an integer number (8617084461).

Almost surely, 2^17234168921 is an apocalyptic number.

It is an amenable number.

17234168921 is a deficient number, since it is larger than the sum of its proper divisors (1).

17234168921 is an equidigital number, since it uses as much as digits as its factorization.

17234168921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The spelling of 17234168921 in words is "seventeen billion, two hundred thirty-four million, one hundred sixty-eight thousand, nine hundred twenty-one".