211141543345 has 8 divisors (see below), whose sum is σ = 268273961064. Its totient is φ = 158977161984.

The previous prime is 211141543343. The next prime is 211141543489. The reversal of 211141543345 is 543345141112.

It can be written as a sum of positive squares in 4 ways, for example, as 64329191424 + 146812351921 = 253632^2 + 383161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211141543345 - 2¹ = 211141543343 is a prime.

It is a super-2 number, since 2×211141543345² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211141543345.

It is not an unprimeable number, because it can be changed into a prime (211141543343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1242008994 + ... + 1242009163.

It is an arithmetic number, because the mean of its divisors is an integer number (33534245133).

Almost surely, 2^211141543345 is an apocalyptic number.

It is an amenable number.

211141543345 is a deficient number, since it is larger than the sum of its proper divisors (57132417719).

211141543345 is a wasteful number, since it uses less digits than its factorization.

211141543345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484018179.

The product of its digits is 28800, while the sum is 34.

Adding to 211141543345 its reverse (543345141112), we get a palindrome (754486684457).

The spelling of 211141543345 in words is "two hundred eleven billion, one hundred forty-one million, five hundred forty-three thousand, three hundred forty-five".