18363128706 has 64 divisors (see below), whose sum is σ = 44154579840. Its totient is φ = 5623369920.

The previous prime is 18363128699. The next prime is 18363128737. The reversal of 18363128706 is 60782136381.

18363128706 is a `hidden beast` number, since 1 + 8 + 3 + 631 + 2 + 8 + 7 + 0 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86136 + ... + 210108.

It is an arithmetic number, because the mean of its divisors is an integer number (689915310).

Almost surely, 2^18363128706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18363128706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22077289920).

18363128706 is an abundant number, since it is smaller than the sum of its proper divisors (25791451134).

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

18363128706 is a wasteful number, since it uses less digits than its factorization.

18363128706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124208 (or 124202 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 18363128706 in words is "eighteen billion, three hundred sixty-three million, one hundred twenty-eight thousand, seven hundred six".