18289289553044 has 12 divisors (see below), whose sum is σ = 32006306474100. Its totient is φ = 9144630560448.

The previous prime is 18289289553001. The next prime is 18289289553049. The reversal of 18289289553044 is 44035598298281.

It can be written as a sum of positive squares in 2 ways, for example, as 13340391002500 + 4948898550544 = 3652450^2 + 2224612^2 .

It is a super-2 number, since 2×18289289553044² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18289289553049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335489 + ... + 6057320.

It is an arithmetic number, because the mean of its divisors is an integer number (2667192206175).

Almost surely, 2^{18289289553044} is an apocalyptic number.

It is an amenable number.

18289289553044 is a deficient number, since it is larger than the sum of its proper divisors (13717016921056).

18289289553044 is a wasteful number, since it uses less digits than its factorization.

18289289553044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7108042 (or 7108040 counting only the distinct ones).

The product of its (nonzero) digits is 199065600, while the sum is 68.

The spelling of 18289289553044 in words is "eighteen trillion, two hundred eighty-nine billion, two hundred eighty-nine million, five hundred fifty-three thousand, forty-four".