17160020645 has 4 divisors (see below), whose sum is σ = 20592024780. Its totient is φ = 13728016512.

The previous prime is 17160020599. The next prime is 17160020663. The reversal of 17160020645 is 54602006171.

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 7015905121 + 10144115524 = 83761^2 + 100718^2 .

It is a cyclic number.

It is not a de Polignac number, because 17160020645 - 2²⁰ = 17158972069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1716002060 + ... + 1716002069.

It is an arithmetic number, because the mean of its divisors is an integer number (5148006195).

Almost surely, 2^17160020645 is an apocalyptic number.

It is an amenable number.

17160020645 is a deficient number, since it is larger than the sum of its proper divisors (3432004135).

17160020645 is an equidigital number, since it uses as much as digits as its factorization.

17160020645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432004134.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 17160020645 in words is "seventeen billion, one hundred sixty million, twenty thousand, six hundred forty-five".