17121342571 has 2 divisors, whose sum is σ = 17121342572. Its totient is φ = 17121342570.

The previous prime is 17121342569. The next prime is 17121342599. The reversal of 17121342571 is 17524312171.

It is a weak prime.

It is an emirp because it is prime and its reverse (17524312171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17121342571 - 2¹ = 17121342569 is a prime.

Together with 17121342569, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (17121342521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8560671285 + 8560671286.

It is an arithmetic number, because the mean of its divisors is an integer number (8560671286).

Almost surely, 2^17121342571 is an apocalyptic number.

17121342571 is a deficient number, since it is larger than the sum of its proper divisors (1).

17121342571 is an equidigital number, since it uses as much as digits as its factorization.

17121342571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 34.

The spelling of 17121342571 in words is "seventeen billion, one hundred twenty-one million, three hundred forty-two thousand, five hundred seventy-one".