17994165120 has 128 divisors (see below), whose sum is σ = 63729396000. Its totient is φ = 4798439424.

The previous prime is 17994165107. The next prime is 17994165121. The reversal of 17994165120 is 2156149971.

17994165120 is a `hidden beast` number, since 1 + 7 + 99 + 41 + 6 + 512 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×17994165120² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17994165121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503385 + ... + 537944.

Almost surely, 2^17994165120 is an apocalyptic number.

17994165120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17994165120 is an abundant number, since it is smaller than the sum of its proper divisors (45735230880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17994165120 is a wasteful number, since it uses less digits than its factorization.

17994165120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041357 (or 1041339 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The spelling of 17994165120 in words is "seventeen billion, nine hundred ninety-four million, one hundred sixty-five thousand, one hundred twenty".