99099999099 has 20 divisors (see below), whose sum is σ = 154474719696. Its totient is φ = 63194201136.

The previous prime is 99099999083. The next prime is 99099999101.

99099999099 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99099999099 - 2⁴ = 99099999083 is a prime.

It is a super-3 number, since 3×99099999099³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is not an unprimeable number, because it can be changed into a prime (99099999079) 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 in 19 ways as a sum of consecutive naturals, for example, 26595024 + ... + 26598749.

Almost surely, 2^99099999099 is an apocalyptic number.

99099999099 is a deficient number, since it is larger than the sum of its proper divisors (55374720597).

99099999099 is a wasteful number, since it uses less digits than its factorization.

99099999099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53193808 (or 53193799 counting only the distinct ones).

The product of its (nonzero) digits is 387420489, while the sum is 81.

The spelling of 99099999099 in words is "ninety-nine billion, ninety-nine million, nine hundred ninety-nine thousand, ninety-nine".