17104100621 has 2 divisors, whose sum is σ = 17104100622. Its totient is φ = 17104100620.

The previous prime is 17104100609. The next prime is 17104100623. The reversal of 17104100621 is 12600140171.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15329163721 + 1774936900 = 123811^2 + 42130^2 .

It is a cyclic number.

It is not a de Polignac number, because 17104100621 - 2¹⁴ = 17104084237 is a prime.

Together with 17104100623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17104100623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8552050310 + 8552050311.

It is an arithmetic number, because the mean of its divisors is an integer number (8552050311).

Almost surely, 2^17104100621 is an apocalyptic number.

It is an amenable number.

17104100621 is a deficient number, since it is larger than the sum of its proper divisors (1).

17104100621 is an equidigital number, since it uses as much as digits as its factorization.

17104100621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 17104100621 its reverse (12600140171), we get a palindrome (29704240792).

The spelling of 17104100621 in words is "seventeen billion, one hundred four million, one hundred thousand, six hundred twenty-one".