211042543455 has 12 divisors (see below), whose sum is σ = 365807075400. Its totient is φ = 112556023152.

The previous prime is 211042543423. The next prime is 211042543463. The reversal of 211042543455 is 554345240112.

211042543455 is a `hidden beast` number, since 2 + 1 + 104 + 2 + 543 + 4 + 5 + 5 = 666.

It is not a de Polignac number, because 211042543455 - 2⁵ = 211042543423 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2344917105 + ... + 2344917194.

It is an arithmetic number, because the mean of its divisors is an integer number (30483922950).

Almost surely, 2^211042543455 is an apocalyptic number.

211042543455 is a deficient number, since it is larger than the sum of its proper divisors (154764531945).

211042543455 is a wasteful number, since it uses less digits than its factorization.

211042543455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4689834310 (or 4689834307 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 211042543455 its reverse (554345240112), we get a palindrome (765387783567).

The spelling of 211042543455 in words is "two hundred eleven billion, forty-two million, five hundred forty-three thousand, four hundred fifty-five".