17994503373 has 32 divisors (see below), whose sum is σ = 30721413120. Its totient is φ = 9095146560.

The previous prime is 17994503357. The next prime is 17994503453. The reversal of 17994503373 is 37330549971.

It is a happy number.

It is not a de Polignac number, because 17994503373 - 2⁴ = 17994503357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17994503333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1044133 + ... + 1061226.

It is an arithmetic number, because the mean of its divisors is an integer number (960044160).

Almost surely, 2^17994503373 is an apocalyptic number.

It is an amenable number.

17994503373 is a deficient number, since it is larger than the sum of its proper divisors (12726909747).

17994503373 is a wasteful number, since it uses less digits than its factorization.

17994503373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105417.

The product of its (nonzero) digits is 2143260, while the sum is 51.

The spelling of 17994503373 in words is "seventeen billion, nine hundred ninety-four million, five hundred three thousand, three hundred seventy-three".