18304444440381 has 8 divisors (see below), whose sum is σ = 26624646458784. Its totient is φ = 11093602691120.

The previous prime is 18304444440379. The next prime is 18304444440389.

18304444440381 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18304444440381 - 2¹ = 18304444440379 is a prime.

It is a super-2 number, since 2×18304444440381² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18304444440381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18304444440389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277340067246 + ... + 277340067311.

It is an arithmetic number, because the mean of its divisors is an integer number (3328080807348).

Almost surely, 2^{18304444440381} is an apocalyptic number.

18304444440381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18304444440381 is a deficient number, since it is larger than the sum of its proper divisors (8320202018403).

18304444440381 is a wasteful number, since it uses less digits than its factorization.

18304444440381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554680134571.

The product of its (nonzero) digits is 2359296, while the sum is 48.

The spelling of 18304444440381 in words is "eighteen trillion, three hundred four billion, four hundred forty-four million, four hundred forty thousand, three hundred eighty-one".