17136979309 has 4 divisors (see below), whose sum is σ = 17727909660. Its totient is φ = 16546048960.

The previous prime is 17136979297. The next prime is 17136979313. The reversal of 17136979309 is 90397963171.

It is a happy number.

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 12871583209 + 4265396100 = 113453^2 + 65310^2 .

It is a cyclic number.

It is not a de Polignac number, because 17136979309 - 2²⁹ = 16600108397 is a prime.

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 17136979309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17136979369) 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, 295465132 + ... + 295465189.

It is an arithmetic number, because the mean of its divisors is an integer number (4431977415).

Almost surely, 2^17136979309 is an apocalyptic number.

It is an amenable number.

17136979309 is a deficient number, since it is larger than the sum of its proper divisors (590930351).

17136979309 is an equidigital number, since it uses as much as digits as its factorization.

17136979309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590930350.

The product of its (nonzero) digits is 1928934, while the sum is 55.

The spelling of 17136979309 in words is "seventeen billion, one hundred thirty-six million, nine hundred seventy-nine thousand, three hundred nine".