211868713850 has 48 divisors (see below), whose sum is σ = 401787453600. Its totient is φ = 83096470080.

The previous prime is 211868713843. The next prime is 211868713867. The reversal of 211868713850 is 58317868112.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1055237 + ... + 1239863.

It is an arithmetic number, because the mean of its divisors is an integer number (8370571950).

Almost surely, 2^211868713850 is an apocalyptic number.

211868713850 is a deficient number, since it is larger than the sum of its proper divisors (189918739750).

211868713850 is a wasteful number, since it uses less digits than its factorization.

211868713850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185087 (or 185082 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 50.

The spelling of 211868713850 in words is "two hundred eleven billion, eight hundred sixty-eight million, seven hundred thirteen thousand, eight hundred fifty".