98609816489 has 2 divisors, whose sum is σ = 98609816490. Its totient is φ = 98609816488.

The previous prime is 98609816467. The next prime is 98609816507. The reversal of 98609816489 is 98461890689.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86976036889 + 11633779600 = 294917^2 + 107860^2 .

It is a cyclic number.

It is not a de Polignac number, because 98609816489 - 2²⁰ = 98608767913 is a prime.

It is not a weakly prime, because it can be changed into another prime (98609816449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49304908244 + 49304908245.

It is an arithmetic number, because the mean of its divisors is an integer number (49304908245).

Almost surely, 2^98609816489 is an apocalyptic number.

It is an amenable number.

98609816489 is a deficient number, since it is larger than the sum of its proper divisors (1).

98609816489 is an equidigital number, since it uses as much as digits as its factorization.

98609816489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53747712, while the sum is 68.

The spelling of 98609816489 in words is "ninety-eight billion, six hundred nine million, eight hundred sixteen thousand, four hundred eighty-nine".