17999999999998 has 16 divisors (see below), whose sum is σ = 27039348000000. Its totient is φ = 8986890008736.

The previous prime is 17999999999951. The next prime is 18000000000001. The reversal of 17999999999998 is 89999999999971.

It is a junction number, because it is equal to n+sod(n) for n = 17999999999891 and 17999999999900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4500003 + ... + 7500001.

It is an arithmetic number, because the mean of its divisors is an integer number (1689959250000).

Almost surely, 2^{17999999999998} is an apocalyptic number.

17999999999998 is a deficient number, since it is larger than the sum of its proper divisors (9039348000002).

17999999999998 is a wasteful number, since it uses less digits than its factorization.

17999999999998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004371.

The product of its digits is 1757339338104, while the sum is 115.

The spelling of 17999999999998 in words is "seventeen trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".