17115551009 has 2 divisors, whose sum is σ = 17115551010. Its totient is φ = 17115551008.

The previous prime is 17115550999. The next prime is 17115551041. The reversal of 17115551009 is 90015551171.

17115551009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13508947984 + 3606603025 = 116228^2 + 60055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17115551009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17115551009.

It is not a weakly prime, because it can be changed into another prime (17115554009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8557775504 + 8557775505.

It is an arithmetic number, because the mean of its divisors is an integer number (8557775505).

Almost surely, 2^17115551009 is an apocalyptic number.

It is an amenable number.

17115551009 is a deficient number, since it is larger than the sum of its proper divisors (1).

17115551009 is an equidigital number, since it uses as much as digits as its factorization.

17115551009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7875, while the sum is 35.

The spelling of 17115551009 in words is "seventeen billion, one hundred fifteen million, five hundred fifty-one thousand, nine".