98561261641439 has 2 divisors, whose sum is σ = 98561261641440. Its totient is φ = 98561261641438.

The previous prime is 98561261641361. The next prime is 98561261641547. The reversal of 98561261641439 is 93414616216589.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 98561261641439 - 2²⁴ = 98561244864223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98561261641039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49280630820719 + 49280630820720.

It is an arithmetic number, because the mean of its divisors is an integer number (49280630820720).

Almost surely, 2^{98561261641439} is an apocalyptic number.

98561261641439 is a deficient number, since it is larger than the sum of its proper divisors (1).

98561261641439 is an equidigital number, since it uses as much as digits as its factorization.

98561261641439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67184640, while the sum is 65.

The spelling of 98561261641439 in words is "ninety-eight trillion, five hundred sixty-one billion, two hundred sixty-one million, six hundred forty-one thousand, four hundred thirty-nine".