98489864730421 has 2 divisors, whose sum is σ = 98489864730422. Its totient is φ = 98489864730420.

The previous prime is 98489864730419. The next prime is 98489864730451. The reversal of 98489864730421 is 12403746898489.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70073875388196 + 28415989342225 = 8371014^2 + 5330665^2 .

It is a cyclic number.

It is not a de Polignac number, because 98489864730421 - 2¹ = 98489864730419 is a prime.

Together with 98489864730419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98489864730451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49244932365210 + 49244932365211.

It is an arithmetic number, because the mean of its divisors is an integer number (49244932365211).

Almost surely, 2^{98489864730421} is an apocalyptic number.

It is an amenable number.

98489864730421 is a deficient number, since it is larger than the sum of its proper divisors (1).

98489864730421 is an equidigital number, since it uses as much as digits as its factorization.

98489864730421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 668860416, while the sum is 73.

The spelling of 98489864730421 in words is "ninety-eight trillion, four hundred eighty-nine billion, eight hundred sixty-four million, seven hundred thirty thousand, four hundred twenty-one".