9999993999998 has 32 divisors (see below), whose sum is σ = 15744180542976. Its totient is φ = 4754495239648.

The previous prime is 9999993999973. The next prime is 9999994000001. The reversal of 9999993999998 is 8999993999999.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89415911 + ... + 89527677.

It is an arithmetic number, because the mean of its divisors is an integer number (492005641968).

Almost surely, 2^{9999993999998} is an apocalyptic number.

9999993999998 is a deficient number, since it is larger than the sum of its proper divisors (5744186542978).

9999993999998 is a wasteful number, since it uses less digits than its factorization.

9999993999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123208.

The product of its digits is 753145430616, while the sum is 110.

Subtracting from 9999993999998 its reverse (8999993999999), we obtain a palindrome (999999999999).

The spelling of 9999993999998 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred ninety-three million, nine hundred ninety-nine thousand, nine hundred ninety-eight".