211454312543 has 2 divisors, whose sum is σ = 211454312544. Its totient is φ = 211454312542.

The previous prime is 211454312521. The next prime is 211454312621. The reversal of 211454312543 is 345213454112.

211454312543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211454312543 - 2¹⁴ = 211454296159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211454312513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105727156271 + 105727156272.

It is an arithmetic number, because the mean of its divisors is an integer number (105727156272).

Almost surely, 2^211454312543 is an apocalyptic number.

211454312543 is a deficient number, since it is larger than the sum of its proper divisors (1).

211454312543 is an equidigital number, since it uses as much as digits as its factorization.

211454312543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 35.

Adding to 211454312543 its reverse (345213454112), we get a palindrome (556667766655).

The spelling of 211454312543 in words is "two hundred eleven billion, four hundred fifty-four million, three hundred twelve thousand, five hundred forty-three".