18360201780216 has 48 divisors (see below), whose sum is σ = 49728329337960. Its totient is φ = 6119724755520.

The previous prime is 18360201780211. The next prime is 18360201780247. The reversal of 18360201780216 is 61208710206381.

18360201780216 is a `hidden beast` number, since 1 + 8 + 3 + 602 + 0 + 17 + 8 + 0 + 21 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18360201780211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5838415 + ... + 8414718.

Almost surely, 2^{18360201780216} is an apocalyptic number.

It is an amenable number.

18360201780216 is an abundant number, since it is smaller than the sum of its proper divisors (31368127557744).

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

18360201780216 is a wasteful number, since it uses less digits than its factorization.

18360201780216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14271036 (or 14271029 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

Adding to 18360201780216 its reverse (61208710206381), we get a palindrome (79568911986597).

The spelling of 18360201780216 in words is "eighteen trillion, three hundred sixty billion, two hundred one million, seven hundred eighty thousand, two hundred sixteen".