98981418997 has 2 divisors, whose sum is σ = 98981418998. Its totient is φ = 98981418996.

The previous prime is 98981418967. The next prime is 98981419001. The reversal of 98981418997 is 79981418989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55199622916 + 43781796081 = 234946^2 + 209241^2 .

It is a cyclic number.

It is not a de Polignac number, because 98981418997 - 2¹¹ = 98981416949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98981418917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49490709498 + 49490709499.

It is an arithmetic number, because the mean of its divisors is an integer number (49490709499).

Almost surely, 2^98981418997 is an apocalyptic number.

It is an amenable number.

98981418997 is a deficient number, since it is larger than the sum of its proper divisors (1).

98981418997 is an equidigital number, since it uses as much as digits as its factorization.

98981418997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94058496, while the sum is 73.

It can be divided in two parts, 9898 and 1418997, that added together give a triangular number (1428895 = T₁₆₉₀).

The spelling of 98981418997 in words is "ninety-eight billion, nine hundred eighty-one million, four hundred eighteen thousand, nine hundred ninety-seven".