216188364758166 has 96 divisors (see below), whose sum is σ = 475548141825120. Its totient is φ = 70967387174400.

The previous prime is 216188364758141. The next prime is 216188364758209. The reversal of 216188364758166 is 661857463881612.

216188364758166 is a `hidden beast` number, since 2 + 1 + 6 + 1 + 8 + 8 + 36 + 4 + 7 + 581 + 6 + 6 = 666.

It is a hoax number, since the sum of its digits (72) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 216188364758094 and 216188364758103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3628448496 + ... + 3628508076.

It is an arithmetic number, because the mean of its divisors is an integer number (4953626477345).

Almost surely, 2^{216188364758166} is an apocalyptic number.

216188364758166 is an abundant number, since it is smaller than the sum of its proper divisors (259359777066954).

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

216188364758166 is a wasteful number, since it uses less digits than its factorization.

216188364758166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63822 (or 63819 counting only the distinct ones).

The product of its digits is 557383680, while the sum is 72.

The spelling of 216188364758166 in words is "two hundred sixteen trillion, one hundred eighty-eight billion, three hundred sixty-four million, seven hundred fifty-eight thousand, one hundred sixty-six".