18043209192944 has 80 divisors (see below), whose sum is σ = 39912629594880. Its totient is φ = 7841190666240.

The previous prime is 18043209192941. The next prime is 18043209192949. The reversal of 18043209192944 is 44929190234081.

It is a self number, because there is not a number n which added to its sum of digits gives 18043209192944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18043209192941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37575809 + ... + 38052960.

It is an arithmetic number, because the mean of its divisors is an integer number (498907869936).

Almost surely, 2^{18043209192944} is an apocalyptic number.

It is an amenable number.

18043209192944 is an abundant number, since it is smaller than the sum of its proper divisors (21869420401936).

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

18043209192944 is a wasteful number, since it uses less digits than its factorization.

18043209192944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75628858 (or 75628852 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 56.

The spelling of 18043209192944 in words is "eighteen trillion, forty-three billion, two hundred nine million, one hundred ninety-two thousand, nine hundred forty-four".