211166200000050 has 96 divisors (see below), whose sum is σ = 541824487174080. Its totient is φ = 54361805971200.

The previous prime is 211166200000031. The next prime is 211166200000069. The reversal of 211166200000050 is 50000002661112.

211166200000050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (211166200000031) and next prime (211166200000069).

It is a super-2 number, since 2×211166200000050² (a number of 29 digits) contains 22 as substring.

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, 28588585 + ... + 35208515.

It is an arithmetic number, because the mean of its divisors is an integer number (5644005074730).

Almost surely, 2^{211166200000050} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211166200000050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270912243587040).

211166200000050 is an abundant number, since it is smaller than the sum of its proper divisors (330658287174030).

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

211166200000050 is a wasteful number, since it uses less digits than its factorization.

211166200000050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6627308 (or 6627303 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 211166200000050 its reverse (50000002661112), we get a palindrome (261166202661162).

The spelling of 211166200000050 in words is "two hundred eleven trillion, one hundred sixty-six billion, two hundred million, fifty", and thus it is an aban number.