6543258212 has 6 divisors (see below), whose sum is σ = 11450701878. Its totient is φ = 3271629104.

The previous prime is 6543258203. The next prime is 6543258217. The reversal of 6543258212 is 2128523456.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6493781056 + 49477156 = 80584^2 + 7034^2 .

It is a super-4 number, since 4×6543258212⁴ (a number of 40 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (6543258217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 817907273 + ... + 817907280.

It is an arithmetic number, because the mean of its divisors is an integer number (1908450313).

Almost surely, 2^6543258212 is an apocalyptic number.

It is an amenable number.

6543258212 is a deficient number, since it is larger than the sum of its proper divisors (4907443666).

6543258212 is a wasteful number, since it uses less digits than its factorization.

6543258212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635814557 (or 1635814555 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 6543258212 is about 80890.4086526950. The cubic root of 6543258212 is about 1870.3864731643.

The spelling of 6543258212 in words is "six billion, five hundred forty-three million, two hundred fifty-eight thousand, two hundred twelve".