211800553163 has 4 divisors (see below), whose sum is σ = 212008405560. Its totient is φ = 211592700768.

The previous prime is 211800553147. The next prime is 211800553177. The reversal of 211800553163 is 361355008112.

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

It is a cyclic number.

It is not a de Polignac number, because 211800553163 - 2⁴ = 211800553147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211800559163) 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, 103924670 + ... + 103926707.

It is an arithmetic number, because the mean of its divisors is an integer number (53002101390).

Almost surely, 2^211800553163 is an apocalyptic number.

211800553163 is a deficient number, since it is larger than the sum of its proper divisors (207852397).

211800553163 is a wasteful number, since it uses less digits than its factorization.

211800553163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207852396.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 211800553163 in words is "two hundred eleven billion, eight hundred million, five hundred fifty-three thousand, one hundred sixty-three".