216550166661006 has 16 divisors (see below), whose sum is σ = 433105013715024. Its totient is φ = 72182608821504.

The previous prime is 216550166660953. The next prime is 216550166661083. The reversal of 216550166661006 is 600166661055612.

It is a self number, because there is not a number n which added to its sum of digits gives 216550166661006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194414755 + ... + 195525438.

It is an arithmetic number, because the mean of its divisors is an integer number (27069063357189).

Almost surely, 2^{216550166661006} is an apocalyptic number.

216550166661006 is an abundant number, since it is smaller than the sum of its proper divisors (216554847054018).

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

216550166661006 is a wasteful number, since it uses less digits than its factorization.

216550166661006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390032755.

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 216550166661006 in words is "two hundred sixteen trillion, five hundred fifty billion, one hundred sixty-six million, six hundred sixty-one thousand, six".