211975804216 has 32 divisors (see below), whose sum is σ = 438810825600. Its totient is φ = 95191759840.

The previous prime is 211975804151. The next prime is 211975804273. The reversal of 211975804216 is 612408579112.

211975804216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14503636 + ... + 14518243.

It is an arithmetic number, because the mean of its divisors is an integer number (13712838300).

Almost surely, 2^211975804216 is an apocalyptic number.

It is an amenable number.

211975804216 is an abundant number, since it is smaller than the sum of its proper divisors (226835021384).

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

211975804216 is a wasteful number, since it uses less digits than its factorization.

211975804216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29021979 (or 29021975 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 211975804216 in words is "two hundred eleven billion, nine hundred seventy-five million, eight hundred four thousand, two hundred sixteen".