98166420493 has 2 divisors, whose sum is σ = 98166420494. Its totient is φ = 98166420492.

The previous prime is 98166420487. The next prime is 98166420529. The reversal of 98166420493 is 39402466189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79387007049 + 18779413444 = 281757^2 + 137038^2 .

It is a cyclic number.

It is not a de Polignac number, because 98166420493 - 2⁵ = 98166420461 is a prime.

It is a super-2 number, since 2×98166420493² (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 98166420493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98166420403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49083210246 + 49083210247.

It is an arithmetic number, because the mean of its divisors is an integer number (49083210247).

Almost surely, 2^98166420493 is an apocalyptic number.

It is an amenable number.

98166420493 is a deficient number, since it is larger than the sum of its proper divisors (1).

98166420493 is an equidigital number, since it uses as much as digits as its factorization.

98166420493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 98166420493 in words is "ninety-eight billion, one hundred sixty-six million, four hundred twenty thousand, four hundred ninety-three".