99123447559 has 2 divisors, whose sum is σ = 99123447560. Its totient is φ = 99123447558.

The previous prime is 99123447557. The next prime is 99123447601. The reversal of 99123447559 is 95574432199.

It is a weak prime.

It is an emirp because it is prime and its reverse (95574432199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99123447559 - 2¹ = 99123447557 is a prime.

Together with 99123447557, 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 (99123447551) 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, 49561723779 + 49561723780.

It is an arithmetic number, because the mean of its divisors is an integer number (49561723780).

Almost surely, 2^99123447559 is an apocalyptic number.

99123447559 is a deficient number, since it is larger than the sum of its proper divisors (1).

99123447559 is an equidigital number, since it uses as much as digits as its factorization.

99123447559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12247200, while the sum is 58.

The spelling of 99123447559 in words is "ninety-nine billion, one hundred twenty-three million, four hundred forty-seven thousand, five hundred fifty-nine".