18243466434281 has 8 divisors (see below), whose sum is σ = 19902886609824. Its totient is φ = 16584200129920.

The previous prime is 18243466434247. The next prime is 18243466434283.

18243466434281 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 18243466434281 - 2⁶ = 18243466434217 is a prime.

It is a super-5 number, since 5×18243466434281⁵ (a number of 68 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18243466434283) 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, 38219816 + ... + 38694201.

It is an arithmetic number, because the mean of its divisors is an integer number (2487860826228).

Almost surely, 2^{18243466434281} is an apocalyptic number.

18243466434281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18243466434281 is a deficient number, since it is larger than the sum of its proper divisors (1659420175543).

18243466434281 is a wasteful number, since it uses less digits than its factorization.

18243466434281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76935591.

The product of its digits is 21233664, while the sum is 56.

The spelling of 18243466434281 in words is "eighteen trillion, two hundred forty-three billion, four hundred sixty-six million, four hundred thirty-four thousand, two hundred eighty-one".