17004421217 has 4 divisors (see below), whose sum is σ = 19433624256. Its totient is φ = 14575218180.

The previous prime is 17004421201. The next prime is 17004421219. The reversal of 17004421217 is 71212440071.

17004421217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71212440071 = 17 ⋅4188967063.

It is a cyclic number.

It is not a de Polignac number, because 17004421217 - 2⁴ = 17004421201 is a prime.

It is a super-2 number, since 2×17004421217² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17004421217.

It is not an unprimeable number, because it can be changed into a prime (17004421219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1214601509 + ... + 1214601522.

It is an arithmetic number, because the mean of its divisors is an integer number (4858406064).

Almost surely, 2^17004421217 is an apocalyptic number.

It is an amenable number.

17004421217 is a deficient number, since it is larger than the sum of its proper divisors (2429203039).

17004421217 is an equidigital number, since it uses as much as digits as its factorization.

17004421217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429203038.

The product of its (nonzero) digits is 3136, while the sum is 29.

Adding to 17004421217 its reverse (71212440071), we get a palindrome (88216861288).

The spelling of 17004421217 in words is "seventeen billion, four million, four hundred twenty-one thousand, two hundred seventeen".