99843295693 has 2 divisors, whose sum is σ = 99843295694. Its totient is φ = 99843295692.

The previous prime is 99843295661. The next prime is 99843295723. The reversal of 99843295693 is 39659234899.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99662070249 + 181225444 = 315693^2 + 13462^2 .

It is a cyclic number.

It is not a de Polignac number, because 99843295693 - 2⁵ = 99843295661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99843295603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49921647846 + 49921647847.

It is an arithmetic number, because the mean of its divisors is an integer number (49921647847).

Almost surely, 2^99843295693 is an apocalyptic number.

It is an amenable number.

99843295693 is a deficient number, since it is larger than the sum of its proper divisors (1).

99843295693 is an equidigital number, since it uses as much as digits as its factorization.

99843295693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113374080, while the sum is 67.

The spelling of 99843295693 in words is "ninety-nine billion, eight hundred forty-three million, two hundred ninety-five thousand, six hundred ninety-three".