17042051605 has 4 divisors (see below), whose sum is σ = 20450461932. Its totient is φ = 13633641280.

The previous prime is 17042051599. The next prime is 17042051617. The reversal of 17042051605 is 50615024071.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10900821649 + 6141229956 = 104407^2 + 78366^2 .

It is not a de Polignac number, because 17042051605 - 2²⁹ = 16505180693 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1704205156 + ... + 1704205165.

It is an arithmetic number, because the mean of its divisors is an integer number (5112615483).

Almost surely, 2^17042051605 is an apocalyptic number.

It is an amenable number.

17042051605 is a deficient number, since it is larger than the sum of its proper divisors (3408410327).

17042051605 is an equidigital number, since it uses as much as digits as its factorization.

17042051605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408410326.

The product of its (nonzero) digits is 8400, while the sum is 31.

Adding to 17042051605 its reverse (50615024071), we get a palindrome (67657075676).

The spelling of 17042051605 in words is "seventeen billion, forty-two million, fifty-one thousand, six hundred five".