99999988999999 has 8 divisors (see below), whose sum is σ = 111149215904592. Its totient is φ = 89193815231040.

The previous prime is 99999988999997. The next prime is 99999989000161.

99999988999999 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99999988999999 - 2¹ = 99999988999997 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99999988999993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85763283294 + ... + 85763284459.

It is an arithmetic number, because the mean of its divisors is an integer number (13893651988074).

Almost surely, 2^{99999988999999} is an apocalyptic number.

99999988999999 is a deficient number, since it is larger than the sum of its proper divisors (11149226904593).

99999988999999 is a wasteful number, since it uses less digits than its factorization.

99999988999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171526567817.

The product of its digits is 18075490334784, while the sum is 124.

It can be divided in two parts, 999999 and 88999999, that added together give a palindrome (89999998).

The spelling of 99999988999999 in words is "ninety-nine trillion, nine hundred ninety-nine billion, nine hundred eighty-eight million, nine hundred ninety-nine thousand, nine hundred ninety-nine".