17989412791 has 16 divisors (see below), whose sum is σ = 21762892800. Its totient is φ = 14541555168.

The previous prime is 17989412789. The next prime is 17989412803. The reversal of 17989412791 is 19721498971.

It is not a de Polignac number, because 17989412791 - 2¹ = 17989412789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17989412731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1021711 + ... + 1039168.

It is an arithmetic number, because the mean of its divisors is an integer number (1360180800).

Almost surely, 2^17989412791 is an apocalyptic number.

17989412791 is a deficient number, since it is larger than the sum of its proper divisors (3773480009).

17989412791 is a wasteful number, since it uses less digits than its factorization.

17989412791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060958.

The product of its digits is 2286144, while the sum is 58.

The spelling of 17989412791 in words is "seventeen billion, nine hundred eighty-nine million, four hundred twelve thousand, seven hundred ninety-one".