98734427891 has 18 divisors (see below), whose sum is σ = 114439418652. Its totient is φ = 84463496320.

The previous prime is 98734427881. The next prime is 98734427917. The reversal of 98734427891 is 19872443789.

It is not a de Polignac number, because 98734427891 - 2²⁶ = 98667319027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98734427881) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17713781 + ... + 17719353.

Almost surely, 2^98734427891 is an apocalyptic number.

98734427891 is a deficient number, since it is larger than the sum of its proper divisors (15704990761).

98734427891 is an frugal number, since it uses more digits than its factorization.

98734427891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11191 (or 5601 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 62.

It can be divided in two parts, 98734 and 427891, that added together give a palindrome (526625).

The spelling of 98734427891 in words is "ninety-eight billion, seven hundred thirty-four million, four hundred twenty-seven thousand, eight hundred ninety-one".