17042353021 has 2 divisors, whose sum is σ = 17042353022. Its totient is φ = 17042353020.

The previous prime is 17042353007. The next prime is 17042353049. The reversal of 17042353021 is 12035324071.

It is an a-pointer prime, because the next prime (17042353049) can be obtained adding 17042353021 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9877576996 + 7164776025 = 99386^2 + 84645^2 .

It is a cyclic number.

It is not a de Polignac number, because 17042353021 - 2¹¹ = 17042350973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17042353051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8521176510 + 8521176511.

It is an arithmetic number, because the mean of its divisors is an integer number (8521176511).

Almost surely, 2^17042353021 is an apocalyptic number.

It is an amenable number.

17042353021 is a deficient number, since it is larger than the sum of its proper divisors (1).

17042353021 is an equidigital number, since it uses as much as digits as its factorization.

17042353021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 17042353021 its reverse (12035324071), we get a palindrome (29077677092).

The spelling of 17042353021 in words is "seventeen billion, forty-two million, three hundred fifty-three thousand, twenty-one".