99843911684791 has 2 divisors, whose sum is σ = 99843911684792. Its totient is φ = 99843911684790.

The previous prime is 99843911684653. The next prime is 99843911684831. The reversal of 99843911684791 is 19748611934899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99843911684791 - 2³⁷ = 99706472731319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99843911682791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49921955842395 + 49921955842396.

It is an arithmetic number, because the mean of its divisors is an integer number (49921955842396).

Almost surely, 2^{99843911684791} is an apocalyptic number.

99843911684791 is a deficient number, since it is larger than the sum of its proper divisors (1).

99843911684791 is an equidigital number, since it uses as much as digits as its factorization.

99843911684791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846526464, while the sum is 79.

The spelling of 99843911684791 in words is "ninety-nine trillion, eight hundred forty-three billion, nine hundred eleven million, six hundred eighty-four thousand, seven hundred ninety-one".