17145728889 has 4 divisors (see below), whose sum is σ = 22860971856. Its totient is φ = 11430485924.

The previous prime is 17145728881. The next prime is 17145728893. The reversal of 17145728889 is 98882754171.

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.

It is a cyclic number.

It is not a de Polignac number, because 17145728889 - 2³ = 17145728881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (17145728881) 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, 2857621479 + ... + 2857621484.

It is an arithmetic number, because the mean of its divisors is an integer number (5715242964).

Almost surely, 2^17145728889 is an apocalyptic number.

It is an amenable number.

17145728889 is a deficient number, since it is larger than the sum of its proper divisors (5715242967).

17145728889 is an equidigital number, since it uses as much as digits as its factorization.

17145728889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5715242966.

The product of its digits is 9031680, while the sum is 60.

The spelling of 17145728889 in words is "seventeen billion, one hundred forty-five million, seven hundred twenty-eight thousand, eight hundred eighty-nine".