99888888888889 has 2 divisors, whose sum is σ = 99888888888890. Its totient is φ = 99888888888888.

The previous prime is 99888888888853. The next prime is 99888888888907. The reversal of 99888888888889 is 98888888888899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51970762355625 + 47918126533264 = 7209075^2 + 6922292^2 .

It is a cyclic number.

It is not a de Polignac number, because 99888888888889 - 2¹¹ = 99888888886841 is a prime.

It is not a weakly prime, because it can be changed into another prime (99888888808889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49944444444444 + 49944444444445.

It is an arithmetic number, because the mean of its divisors is an integer number (49944444444445).

Almost surely, 2^{99888888888889} is an apocalyptic number.

It is an amenable number.

99888888888889 is a deficient number, since it is larger than the sum of its proper divisors (1).

99888888888889 is an equidigital number, since it uses as much as digits as its factorization.

99888888888889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6262062317568, while the sum is 115.

The spelling of 99888888888889 in words is "ninety-nine trillion, eight hundred eighty-eight billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-nine".