17268040609 has 4 divisors (see below), whose sum is σ = 17357512516. Its totient is φ = 17178568704.

The previous prime is 17268040607. The next prime is 17268040651. The reversal of 17268040609 is 90604086271.

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 12575379600 + 4692661009 = 112140^2 + 68503^2 .

It is not a de Polignac number, because 17268040609 - 2¹ = 17268040607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17268040607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44735664 + ... + 44736049.

It is an arithmetic number, because the mean of its divisors is an integer number (4339378129).

Almost surely, 2^17268040609 is an apocalyptic number.

It is an amenable number.

17268040609 is a deficient number, since it is larger than the sum of its proper divisors (89471907).

17268040609 is an equidigital number, since it uses as much as digits as its factorization.

17268040609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89471906.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 17268040609 in words is "seventeen billion, two hundred sixty-eight million, forty thousand, six hundred nine".