9999900099998 has 8 divisors (see below), whose sum is σ = 15077569581408. Its totient is φ = 4974043572864.

The previous prime is 9999900099971. The next prime is 9999900100007. The reversal of 9999900099998 is 8999900099999.

It is a happy number.

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, 12953238086 + ... + 12953238857.

It is an arithmetic number, because the mean of its divisors is an integer number (1884696197676).

Almost surely, 2^{9999900099998} is an apocalyptic number.

9999900099998 is a deficient number, since it is larger than the sum of its proper divisors (5077669481410).

9999900099998 is a wasteful number, since it uses less digits than its factorization.

9999900099998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25906477138.

The product of its (nonzero) digits is 3099363912, while the sum is 89.

Subtracting from 9999900099998 its reverse (8999900099999), we obtain a palindrome (999999999999).

The spelling of 9999900099998 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred million, ninety-nine thousand, nine hundred ninety-eight".