17999884994 has 32 divisors (see below), whose sum is σ = 33422699520. Its totient is φ = 7079660352.

The previous prime is 17999884951. The next prime is 17999884999. The reversal of 17999884994 is 49948899971.

It is not an unprimeable number, because it can be changed into a prime (17999884999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254354 + ... + 317325.

It is an arithmetic number, because the mean of its divisors is an integer number (1044459360).

Almost surely, 2^17999884994 is an apocalyptic number.

17999884994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

17999884994 is a deficient number, since it is larger than the sum of its proper divisors (15422814526).

17999884994 is a wasteful number, since it uses less digits than its factorization.

17999884994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571874.

The product of its digits is 423263232, while the sum is 77.

The spelling of 17999884994 in words is "seventeen billion, nine hundred ninety-nine million, eight hundred eighty-four thousand, nine hundred ninety-four".