17489680009 has 2 divisors, whose sum is σ = 17489680010. Its totient is φ = 17489680008.

The previous prime is 17489680007. The next prime is 17489680097. The reversal of 17489680009 is 90008698471.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16796937609 + 692742400 = 129603^2 + 26320^2 .

It is a cyclic number.

It is not a de Polignac number, because 17489680009 - 2¹ = 17489680007 is a prime.

Together with 17489680007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (17489680007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8744840004 + 8744840005.

It is an arithmetic number, because the mean of its divisors is an integer number (8744840005).

Almost surely, 2^17489680009 is an apocalyptic number.

It is an amenable number.

17489680009 is a deficient number, since it is larger than the sum of its proper divisors (1).

17489680009 is an equidigital number, since it uses as much as digits as its factorization.

17489680009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 17489680009 in words is "seventeen billion, four hundred eighty-nine million, six hundred eighty thousand, nine".