210055055612166 has 12 divisors (see below), whose sum is σ = 455119287159732. Its totient is φ = 70018351870716.

The previous prime is 210055055612119. The next prime is 210055055612167. The reversal of 210055055612166 is 661216550550012.

It is a happy number.

210055055612166 is a `hidden beast` number, since 2 + 1 + 0 + 0 + 5 + 5 + 0 + 5 + 561 + 21 + 66 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210055055612167) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5834862655876 + ... + 5834862655911.

It is an arithmetic number, because the mean of its divisors is an integer number (37926607263311).

Almost surely, 2^{210055055612166} is an apocalyptic number.

210055055612166 is an abundant number, since it is smaller than the sum of its proper divisors (245064231547566).

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

210055055612166 is a wasteful number, since it uses less digits than its factorization.

210055055612166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11669725311795 (or 11669725311792 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 210055055612166 in words is "two hundred ten trillion, fifty-five billion, fifty-five million, six hundred twelve thousand, one hundred sixty-six".