18843451408756 has 24 divisors (see below), whose sum is σ = 35513310583520. Its totient is φ = 8696817860832.

The previous prime is 18843451408751. The next prime is 18843451408801. The reversal of 18843451408756 is 65780415434881.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18843451408751) 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 7 ways as a sum of consecutive naturals, for example, 444726 + ... + 6155053.

Almost surely, 2^{18843451408756} is an apocalyptic number.

It is an amenable number.

18843451408756 is a deficient number, since it is larger than the sum of its proper divisors (16669859174764).

18843451408756 is a wasteful number, since it uses less digits than its factorization.

18843451408756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6654703 (or 6654701 counting only the distinct ones).

The product of its (nonzero) digits is 103219200, while the sum is 64.

The spelling of 18843451408756 in words is "eighteen trillion, eight hundred forty-three billion, four hundred fifty-one million, four hundred eight thousand, seven hundred fifty-six".