9990099900998 has 8 divisors (see below), whose sum is σ = 17125885544592. Its totient is φ = 4281471386136.

The previous prime is 9990099900973. The next prime is 9990099901037. The reversal of 9990099900998 is 8990099900999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356789282165 + ... + 356789282192.

It is an arithmetic number, because the mean of its divisors is an integer number (2140735693074).

Almost surely, 2^{9990099900998} is an apocalyptic number.

9990099900998 is a deficient number, since it is larger than the sum of its proper divisors (7135785643594).

9990099900998 is a wasteful number, since it uses less digits than its factorization.

9990099900998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713578564366.

The product of its (nonzero) digits is 344373768, while the sum is 80.

Subtracting from 9990099900998 its reverse (8990099900999), we obtain a palindrome (999999999999).

The spelling of 9990099900998 in words is "nine trillion, nine hundred ninety billion, ninety-nine million, nine hundred thousand, nine hundred ninety-eight".