99443635297 has 2 divisors, whose sum is σ = 99443635298. Its totient is φ = 99443635296.

The previous prime is 99443635177. The next prime is 99443635339. The reversal of 99443635297 is 79253634499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99386345536 + 57289761 = 315256^2 + 7569^2 .

It is a cyclic number.

It is not a de Polignac number, because 99443635297 - 2¹¹ = 99443633249 is a prime.

It is not a weakly prime, because it can be changed into another prime (99443635397) 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, 49721817648 + 49721817649.

It is an arithmetic number, because the mean of its divisors is an integer number (49721817649).

Almost surely, 2^99443635297 is an apocalyptic number.

It is an amenable number.

99443635297 is a deficient number, since it is larger than the sum of its proper divisors (1).

99443635297 is an equidigital number, since it uses as much as digits as its factorization.

99443635297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44089920, while the sum is 61.

The spelling of 99443635297 in words is "ninety-nine billion, four hundred forty-three million, six hundred thirty-five thousand, two hundred ninety-seven".