18784326266316 has 108 divisors (see below), whose sum is σ = 51510078138792. Its totient is φ = 5769225326592.

The previous prime is 18784326266243. The next prime is 18784326266317. The reversal of 18784326266316 is 61366262348781.

It is a happy number.

18784326266316 is a `hidden beast` number, since 1 + 8 + 78 + 432 + 62 + 6 + 63 + 16 = 666.

It is not an unprimeable number, because it can be changed into a prime (18784326266317) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 505740 + ... + 6150156.

Almost surely, 2^{18784326266316} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18784326266316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25755039069396).

18784326266316 is an abundant number, since it is smaller than the sum of its proper divisors (32725751872476).

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

18784326266316 is a wasteful number, since it uses less digits than its factorization.

18784326266316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5645000 (or 5644982 counting only the distinct ones).

The product of its digits is 83607552, while the sum is 63.

The spelling of 18784326266316 in words is "eighteen trillion, seven hundred eighty-four billion, three hundred twenty-six million, two hundred sixty-six thousand, three hundred sixteen".