17771125241 has 2 divisors, whose sum is σ = 17771125242. Its totient is φ = 17771125240.

The previous prime is 17771125199. The next prime is 17771125247. The reversal of 17771125241 is 14252117771.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15746485225 + 2024640016 = 125485^2 + 44996^2 .

It is an emirp because it is prime and its reverse (14252117771) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17771125241 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 17771125195 and 17771125204.

It is not a weakly prime, because it can be changed into another prime (17771125247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8885562620 + 8885562621.

It is an arithmetic number, because the mean of its divisors is an integer number (8885562621).

Almost surely, 2^17771125241 is an apocalyptic number.

It is an amenable number.

17771125241 is a deficient number, since it is larger than the sum of its proper divisors (1).

17771125241 is an equidigital number, since it uses as much as digits as its factorization.

17771125241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27440, while the sum is 38.

The spelling of 17771125241 in words is "seventeen billion, seven hundred seventy-one million, one hundred twenty-five thousand, two hundred forty-one".