6543212100 has 72 divisors (see below), whose sum is σ = 19252621920. Its totient is φ = 1715278080.

The previous prime is 6543212057. The next prime is 6543212101. The reversal of 6543212100 is 12123456.

It is not an unprimeable number, because it can be changed into a prime (6543212101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167137 + ... + 202536.

Almost surely, 2^6543212100 is an apocalyptic number.

6543212100 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6543212100 is an abundant number, since it is smaller than the sum of its proper divisors (12709409820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6543212100 is a wasteful number, since it uses less digits than its factorization.

6543212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369749 (or 369742 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 6543212100 is about 80890.1236245810. The cubic root of 6543212100 is about 1870.3820794580.

Adding to 6543212100 its reverse (12123456), we get a palindrome (6555335556).

The spelling of 6543212100 in words is "six billion, five hundred forty-three million, two hundred twelve thousand, one hundred".