99999499999 has 8 divisors (see below), whose sum is σ = 115662072960. Its totient is φ = 84681159576.

The previous prime is 99999499949. The next prime is 99999500011.

99999499999 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 99999499999 - 2⁷ = 99999499871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99999499949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86057509 + ... + 86058670.

It is an arithmetic number, because the mean of its divisors is an integer number (14457759120).

Almost surely, 2^99999499999 is an apocalyptic number.

99999499999 is a deficient number, since it is larger than the sum of its proper divisors (15662572961).

99999499999 is a wasteful number, since it uses less digits than its factorization.

99999499999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172116269.

The product of its digits is 13947137604, while the sum is 94.

The spelling of 99999499999 in words is "ninety-nine billion, nine hundred ninety-nine million, four hundred ninety-nine thousand, nine hundred ninety-nine".