211343145543 has 16 divisors (see below), whose sum is σ = 314674336000. Its totient is φ = 140187409560.

The previous prime is 211343145523. The next prime is 211343145553. The reversal of 211343145543 is 345541343112.

211343145543 is a `hidden beast` number, since 2 + 1 + 134 + 31 + 455 + 43 = 666.

It is not a de Polignac number, because 211343145543 - 2⁵ = 211343145511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211343145498 and 211343145507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211343145523) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19661773 + ... + 19672518.

It is an arithmetic number, because the mean of its divisors is an integer number (19667146000).

Almost surely, 2^211343145543 is an apocalyptic number.

211343145543 is a deficient number, since it is larger than the sum of its proper divisors (103331190457).

211343145543 is a wasteful number, since it uses less digits than its factorization.

211343145543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39334499 (or 39334493 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

Adding to 211343145543 its reverse (345541343112), we get a palindrome (556884488655).

The spelling of 211343145543 in words is "two hundred eleven billion, three hundred forty-three million, one hundred forty-five thousand, five hundred forty-three".