211712313866 has 8 divisors (see below), whose sum is σ = 317712630144. Its totient is φ = 105808103820.

The previous prime is 211712313833. The next prime is 211712313887. The reversal of 211712313866 is 668313217112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24021050 + ... + 24029861.

It is an arithmetic number, because the mean of its divisors is an integer number (39714078768).

Almost surely, 2^211712313866 is an apocalyptic number.

211712313866 is a deficient number, since it is larger than the sum of its proper divisors (106000316278).

211712313866 is a wasteful number, since it uses less digits than its factorization.

211712313866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48053116.

The product of its digits is 72576, while the sum is 41.

The spelling of 211712313866 in words is "two hundred eleven billion, seven hundred twelve million, three hundred thirteen thousand, eight hundred sixty-six".