9999993992998 has 4 divisors (see below), whose sum is σ = 14999990989500. Its totient is φ = 4999996996498.

The previous prime is 9999993992981. The next prime is 9999993992999. The reversal of 9999993992998 is 8992993999999.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (103) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 9999993992897 and 9999993992906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999993992999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2499998498248 + ... + 2499998498251.

It is an arithmetic number, because the mean of its divisors is an integer number (3749997747375).

Almost surely, 2^{9999993992998} is an apocalyptic number.

9999993992998 is a deficient number, since it is larger than the sum of its proper divisors (4999996996502).

9999993992998 is a wasteful number, since it uses less digits than its factorization.

9999993992998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4999996996501.

The product of its digits is 167365651248, while the sum is 103.

The spelling of 9999993992998 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred ninety-three million, nine hundred ninety-two thousand, nine hundred ninety-eight".