12018707543718 has 192 divisors, whose sum is σ = 28453781970432. Its totient is φ = 3798208039680.

The previous prime is 12018707543639. The next prime is 12018707543719. The reversal of 12018707543718 is 81734570781021.

12018707543718 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 87 + 0 + 7 + 543 + 7 + 18 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12018707543719) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 108897783 + ... + 109008093.

It is an arithmetic number, because the mean of its divisors is an integer number (148196781096).

Almost surely, 2^{12018707543718} is an apocalyptic number.

12018707543718 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12018707543718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14226890985216).

12018707543718 is an abundant number, since it is smaller than the sum of its proper divisors (16435074426714).

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

12018707543718 is a wasteful number, since it uses less digits than its factorization.

12018707543718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110521 (or 110509 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 54.

The spelling of 12018707543718 in words is "twelve trillion, eighteen billion, seven hundred seven million, five hundred forty-three thousand, seven hundred eighteen".