99189992622491 has 2 divisors, whose sum is σ = 99189992622492. Its totient is φ = 99189992622490.

The previous prime is 99189992622473. The next prime is 99189992622517. The reversal of 99189992622491 is 19422629998199.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99189992622491 - 2³⁴ = 99172812753307 is a prime.

It is not a weakly prime, because it can be changed into another prime (99189992622421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49594996311245 + 49594996311246.

It is an arithmetic number, because the mean of its divisors is an integer number (49594996311246).

Almost surely, 2^{99189992622491} is an apocalyptic number.

99189992622491 is a deficient number, since it is larger than the sum of its proper divisors (1).

99189992622491 is an equidigital number, since it uses as much as digits as its factorization.

99189992622491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816293376, while the sum is 80.

The spelling of 99189992622491 in words is "ninety-nine trillion, one hundred eighty-nine billion, nine hundred ninety-two million, six hundred twenty-two thousand, four hundred ninety-one".