98117854489 has 2 divisors, whose sum is σ = 98117854490. Its totient is φ = 98117854488.

The previous prime is 98117854423. The next prime is 98117854519. The reversal of 98117854489 is 98445871189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62546008464 + 35571846025 = 250092^2 + 188605^2 .

It is a cyclic number.

It is not a de Polignac number, because 98117854489 - 2³¹ = 95970370841 is a prime.

It is a super-2 number, since 2×98117854489² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 98117854489.

It is not a weakly prime, because it can be changed into another prime (98117834489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49058927244 + 49058927245.

It is an arithmetic number, because the mean of its divisors is an integer number (49058927245).

Almost surely, 2^98117854489 is an apocalyptic number.

It is an amenable number.

98117854489 is a deficient number, since it is larger than the sum of its proper divisors (1).

98117854489 is an equidigital number, since it uses as much as digits as its factorization.

98117854489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23224320, while the sum is 64.

The spelling of 98117854489 in words is "ninety-eight billion, one hundred seventeen million, eight hundred fifty-four thousand, four hundred eighty-nine".