2106500543 has 10 divisors (see below), whose sum is σ = 2457440544. Its totient is φ = 1805569836.

The previous prime is 2106500527. The next prime is 2106500551. The reversal of 2106500543 is 3450056012.

It is not a de Polignac number, because 2106500543 - 2⁴ = 2106500527 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 (2106500443) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 436271 + ... + 441072.

Almost surely, 2^2106500543 is an apocalyptic number.

2106500543 is a deficient number, since it is larger than the sum of its proper divisors (350940001).

2106500543 is an frugal number, since it uses more digits than its factorization.

2106500543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877371 (or 877350 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2106500543 is about 45896.6288849192. The cubic root of 2106500543 is about 1281.8991467688.

Adding to 2106500543 its reverse (3450056012), we get a palindrome (5556556555).

The spelling of 2106500543 in words is "two billion, one hundred six million, five hundred thousand, five hundred forty-three".