99999989999599 has 2 divisors, whose sum is σ = 99999989999600. Its totient is φ = 99999989999598.

The previous prime is 99999989999563. The next prime is 99999989999629. The reversal of 99999989999599 is 99599998999999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99999989999599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99999989999599.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99999989997599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999994999799 + 49999994999800.

It is an arithmetic number, because the mean of its divisors is an integer number (49999994999800).

Almost surely, 2^{99999989999599} is an apocalyptic number.

99999989999599 is a deficient number, since it is larger than the sum of its proper divisors (1).

99999989999599 is an equidigital number, since it uses as much as digits as its factorization.

99999989999599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11297181459240, while the sum is 121.

The spelling of 99999989999599 in words is "ninety-nine trillion, nine hundred ninety-nine billion, nine hundred eighty-nine million, nine hundred ninety-nine thousand, five hundred ninety-nine".