98981418989 has 4 divisors (see below), whose sum is σ = 99044425920. Its totient is φ = 98918412060.

The previous prime is 98981418967. The next prime is 98981418997.

98981418989 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 98981418989 - 2²⁴ = 98964641773 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98981418929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31501109 + ... + 31504250.

It is an arithmetic number, because the mean of its divisors is an integer number (24761106480).

Almost surely, 2^98981418989 is an apocalyptic number.

It is an amenable number.

98981418989 is a deficient number, since it is larger than the sum of its proper divisors (63006931).

98981418989 is a wasteful number, since it uses less digits than its factorization.

98981418989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63006930.

The product of its digits is 107495424, while the sum is 74.

The spelling of 98981418989 in words is "ninety-eight billion, nine hundred eighty-one million, four hundred eighteen thousand, nine hundred eighty-nine".