99999900099 has 96 divisors (see below), whose sum is σ = 166456442880. Its totient is φ = 57294302400.

The previous prime is 99999900083. The next prime is 99999900107. The reversal of 99999900099 is 99000999999.

It is not a de Polignac number, because 99999900099 - 2⁴ = 99999900083 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (99999904099) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30237204 + ... + 30240510.

It is an arithmetic number, because the mean of its divisors is an integer number (1733921280).

Almost surely, 2^99999900099 is an apocalyptic number.

99999900099 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

99999900099 is a deficient number, since it is larger than the sum of its proper divisors (66456542781).

99999900099 is a wasteful number, since it uses less digits than its factorization.

99999900099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3581 (or 3578 counting only the distinct ones).

The product of its (nonzero) digits is 43046721, while the sum is 72.

The spelling of 99999900099 in words is "ninety-nine billion, nine hundred ninety-nine million, nine hundred thousand, ninety-nine".