17064196921 has 2 divisors, whose sum is σ = 17064196922. Its totient is φ = 17064196920.

The previous prime is 17064196889. The next prime is 17064196931. The reversal of 17064196921 is 12969146071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10845139600 + 6219057321 = 104140^2 + 78861^2 .

It is a cyclic number.

It is not a de Polignac number, because 17064196921 - 2⁵ = 17064196889 is a prime.

It is not a weakly prime, because it can be changed into another prime (17064196931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8532098460 + 8532098461.

It is an arithmetic number, because the mean of its divisors is an integer number (8532098461).

Almost surely, 2^17064196921 is an apocalyptic number.

It is an amenable number.

17064196921 is a deficient number, since it is larger than the sum of its proper divisors (1).

17064196921 is an equidigital number, since it uses as much as digits as its factorization.

17064196921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 17064196921 in words is "seventeen billion, sixty-four million, one hundred ninety-six thousand, nine hundred twenty-one".