99521612599 has 2 divisors, whose sum is σ = 99521612600. Its totient is φ = 99521612598.

The previous prime is 99521612591. The next prime is 99521612623.

99521612599 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 99521612599 - 2³ = 99521612591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99521612591) 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, 49760806299 + 49760806300.

It is an arithmetic number, because the mean of its divisors is an integer number (49760806300).

Almost surely, 2^99521612599 is an apocalyptic number.

99521612599 is a deficient number, since it is larger than the sum of its proper divisors (1).

99521612599 is an equidigital number, since it uses as much as digits as its factorization.

99521612599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3936600, while the sum is 58.

The spelling of 99521612599 in words is "ninety-nine billion, five hundred twenty-one million, six hundred twelve thousand, five hundred ninety-nine".