99343815209 has 16 divisors (see below), whose sum is σ = 100075409280. Its totient is φ = 98616165120.

The previous prime is 99343815173. The next prime is 99343815247. The reversal of 99343815209 is 90251834399.

It is a cyclic number.

It is not a de Polignac number, because 99343815209 - 2¹² = 99343811113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99343815289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121003019 + ... + 121003839.

It is an arithmetic number, because the mean of its divisors is an integer number (6254713080).

Almost surely, 2^99343815209 is an apocalyptic number.

It is an amenable number.

99343815209 is a deficient number, since it is larger than the sum of its proper divisors (731594071).

99343815209 is a wasteful number, since it uses less digits than its factorization.

99343815209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The spelling of 99343815209 in words is "ninety-nine billion, three hundred forty-three million, eight hundred fifteen thousand, two hundred nine".