9909900099098 has 16 divisors (see below), whose sum is σ = 14878754968896. Its totient is φ = 4950316852320.

The previous prime is 9909900099017. The next prime is 9909900099103. The reversal of 9909900099098 is 8909900099099.

It is a super-2 number, since 2×9909900099098² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11009165 + ... + 11875247.

It is an arithmetic number, because the mean of its divisors is an integer number (929922185556).

Almost surely, 2^{9909900099098} is an apocalyptic number.

9909900099098 is a deficient number, since it is larger than the sum of its proper divisors (4968854869798).

9909900099098 is a wasteful number, since it uses less digits than its factorization.

9909900099098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871429.

The product of its (nonzero) digits is 38263752, while the sum is 71.

Subtracting from 9909900099098 its reverse (8909900099099), we obtain a palindrome (999999999999).

The spelling of 9909900099098 in words is "nine trillion, nine hundred nine billion, nine hundred million, ninety-nine thousand, ninety-eight".