211871050563 has 4 divisors (see below), whose sum is σ = 282494734088. Its totient is φ = 141247367040.

The previous prime is 211871050549. The next prime is 211871050579. The reversal of 211871050563 is 365050178112.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 211871050563 - 2¹⁰ = 211871049539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211871050543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35311841758 + ... + 35311841763.

It is an arithmetic number, because the mean of its divisors is an integer number (70623683522).

Almost surely, 2^211871050563 is an apocalyptic number.

211871050563 is a deficient number, since it is larger than the sum of its proper divisors (70623683525).

211871050563 is an equidigital number, since it uses as much as digits as its factorization.

211871050563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70623683524.

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 211871050563 in words is "two hundred eleven billion, eight hundred seventy-one million, fifty thousand, five hundred sixty-three".