211044543542 has 16 divisors (see below), whose sum is σ = 361799747232. Its totient is φ = 90445386240.

The previous prime is 211044543461. The next prime is 211044543551. The reversal of 211044543542 is 245345440112.

It is a happy number.

It is a super-2 number, since 2×211044543542² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 464648 + ... + 798740.

It is an arithmetic number, because the mean of its divisors is an integer number (22612484202).

Almost surely, 2^211044543542 is an apocalyptic number.

211044543542 is a deficient number, since it is larger than the sum of its proper divisors (150755203690).

211044543542 is a wasteful number, since it uses less digits than its factorization.

211044543542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379223.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 211044543542 its reverse (245345440112), we get a palindrome (456389983654).

The spelling of 211044543542 in words is "two hundred eleven billion, forty-four million, five hundred forty-three thousand, five hundred forty-two".