18787522940352 has 224 divisors, whose sum is σ = 58521541478400. Its totient is φ = 5890015604736.

The previous prime is 18787522940311. The next prime is 18787522940353. The reversal of 18787522940352 is 25304922578781.

18787522940352 is a `hidden beast` number, since 1 + 8 + 78 + 7 + 522 + 9 + 4 + 0 + 35 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18787522940352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18787522940353) 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 31 ways as a sum of consecutive naturals, for example, 42049843 + ... + 42494285.

It is an arithmetic number, because the mean of its divisors is an integer number (261256881600).

Almost surely, 2^{18787522940352} is an apocalyptic number.

18787522940352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18787522940352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29260770739200).

18787522940352 is an abundant number, since it is smaller than the sum of its proper divisors (39734018538048).

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

18787522940352 is a wasteful number, since it uses less digits than its factorization.

18787522940352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445920 (or 445904 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 63.

The spelling of 18787522940352 in words is "eighteen trillion, seven hundred eighty-seven billion, five hundred twenty-two million, nine hundred forty thousand, three hundred fifty-two".