98631216617 has 2 divisors, whose sum is σ = 98631216618. Its totient is φ = 98631216616.

The previous prime is 98631216611. The next prime is 98631216647. The reversal of 98631216617 is 71661213689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94086973696 + 4544242921 = 306736^2 + 67411^2 .

It is a cyclic number.

It is not a de Polignac number, because 98631216617 - 2⁴ = 98631216601 is a prime.

It is not a weakly prime, because it can be changed into another prime (98631216611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49315608308 + 49315608309.

It is an arithmetic number, because the mean of its divisors is an integer number (49315608309).

Almost surely, 2^98631216617 is an apocalyptic number.

It is an amenable number.

98631216617 is a deficient number, since it is larger than the sum of its proper divisors (1).

98631216617 is an equidigital number, since it uses as much as digits as its factorization.

98631216617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The spelling of 98631216617 in words is "ninety-eight billion, six hundred thirty-one million, two hundred sixteen thousand, six hundred seventeen".