99900999900999 has 48 divisors (see below), whose sum is σ = 157557004020000. Its totient is φ = 60493280440320.

The previous prime is 99900999900991. The next prime is 99900999901039.

99900999900999 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99900999900999 - 2³ = 99900999900991 is a prime.

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 (99900999900991) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3026094417 + ... + 3026127429.

It is an arithmetic number, because the mean of its divisors is an integer number (3282437583750).

Almost surely, 2^{99900999900999} is an apocalyptic number.

99900999900999 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

99900999900999 is a deficient number, since it is larger than the sum of its proper divisors (57656004119001).

99900999900999 is a wasteful number, since it uses less digits than its factorization.

99900999900999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58752 (or 58749 counting only the distinct ones).

The product of its (nonzero) digits is 3486784401, while the sum is 90.

The spelling of 99900999900999 in words is "ninety-nine trillion, nine hundred billion, nine hundred ninety-nine million, nine hundred thousand, nine hundred ninety-nine".