211659161827 has 12 divisors (see below), whose sum is σ = 230070984616. Its totient is φ = 194575852800.

The previous prime is 211659161801. The next prime is 211659161867. The reversal of 211659161827 is 728161956112.

211659161827 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-211659161827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211659161867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8503674 + ... + 8528527.

Almost surely, 2^211659161827 is an apocalyptic number.

211659161827 is a deficient number, since it is larger than the sum of its proper divisors (18411822789).

211659161827 is a wasteful number, since it uses less digits than its factorization.

211659161827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17032278 (or 17032261 counting only the distinct ones).

The product of its digits is 362880, while the sum is 49.

The spelling of 211659161827 in words is "two hundred eleven billion, six hundred fifty-nine million, one hundred sixty-one thousand, eight hundred twenty-seven".