216000501606 has 64 divisors (see below), whose sum is σ = 492627018240. Its totient is φ = 70130723040.

The previous prime is 216000501601. The next prime is 216000501623. The reversal of 216000501606 is 606105000612.

It is a happy number.

216000501606 is a `hidden beast` number, since 2 + 1 + 6 + 0 + 0 + 0 + 50 + 1 + 606 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 216000501606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216000501601) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 21165 + ... + 657608.

It is an arithmetic number, because the mean of its divisors is an integer number (7697297160).

Almost surely, 2^216000501606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216000501606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246313509120).

216000501606 is an abundant number, since it is smaller than the sum of its proper divisors (276626516634).

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

216000501606 is a wasteful number, since it uses less digits than its factorization.

216000501606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678938 (or 678932 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 216000501606 in words is "two hundred sixteen billion, five hundred one thousand, six hundred six".