2105411543 has 4 divisors (see below), whose sum is σ = 2105515728. Its totient is φ = 2105307360.

The previous prime is 2105411507. The next prime is 2105411579. The reversal of 2105411543 is 3451145012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (2105411507) and next prime (2105411579).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105411543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105491543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10946 + ... + 65807.

It is an arithmetic number, because the mean of its divisors is an integer number (526378932).

Almost surely, 2^2105411543 is an apocalyptic number.

2105411543 is a deficient number, since it is larger than the sum of its proper divisors (104185).

2105411543 is an equidigital number, since it uses as much as digits as its factorization.

2105411543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104184.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2105411543 is about 45884.7637348172. The cubic root of 2105411543 is about 1281.6782070675.

Adding to 2105411543 its reverse (3451145012), we get a palindrome (5556556555).

The spelling of 2105411543 in words is "two billion, one hundred five million, four hundred eleven thousand, five hundred forty-three".