17047545689 has 2 divisors, whose sum is σ = 17047545690. Its totient is φ = 17047545688.

The previous prime is 17047545659. The next prime is 17047545707. The reversal of 17047545689 is 98654574071.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12408846025 + 4638699664 = 111395^2 + 68108^2 .

It is an emirp because it is prime and its reverse (98654574071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17047545689 - 2⁸ = 17047545433 is a prime.

It is not a weakly prime, because it can be changed into another prime (17047545659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8523772844 + 8523772845.

It is an arithmetic number, because the mean of its divisors is an integer number (8523772845).

Almost surely, 2^17047545689 is an apocalyptic number.

It is an amenable number.

17047545689 is a deficient number, since it is larger than the sum of its proper divisors (1).

17047545689 is an equidigital number, since it uses as much as digits as its factorization.

17047545689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 17047545689 in words is "seventeen billion, forty-seven million, five hundred forty-five thousand, six hundred eighty-nine".