216036397836 has 192 divisors, whose sum is σ = 647592744960. Its totient is φ = 61005139200.

The previous prime is 216036397721. The next prime is 216036397877. The reversal of 216036397836 is 638793630612.

216036397836 is a `hidden beast` number, since 2 + 160 + 363 + 97 + 8 + 36 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49400146 + ... + 49404518.

It is an arithmetic number, because the mean of its divisors is an integer number (3372878880).

Almost surely, 2^216036397836 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 216036397836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323796372480).

216036397836 is an abundant number, since it is smaller than the sum of its proper divisors (431556347124).

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

216036397836 is a wasteful number, since it uses less digits than its factorization.

216036397836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5141 (or 5133 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 54.

The spelling of 216036397836 in words is "two hundred sixteen billion, thirty-six million, three hundred ninety-seven thousand, eight hundred thirty-six".