17166745897 has 6 divisors (see below), whose sum is σ = 19969479978. Its totient is φ = 14714353584.

The previous prime is 17166745859. The next prime is 17166745913. The reversal of 17166745897 is 79854766171.

It can be written as a sum of positive squares in only one way, i.e., 16352271376 + 814474521 = 127876^2 + 28539^2 .

It is not a de Polignac number, because 17166745897 - 2⁷ = 17166745769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (17166745847) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 175170828 + ... + 175170925.

It is an arithmetic number, because the mean of its divisors is an integer number (3328246663).

Almost surely, 2^17166745897 is an apocalyptic number.

It is an amenable number.

17166745897 is a deficient number, since it is larger than the sum of its proper divisors (2802734081).

17166745897 is an equidigital number, since it uses as much as digits as its factorization.

17166745897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350341767 (or 350341760 counting only the distinct ones).

The product of its digits is 17781120, while the sum is 61.

The spelling of 17166745897 in words is "seventeen billion, one hundred sixty-six million, seven hundred forty-five thousand, eight hundred ninety-seven".