6543163216 has 10 divisors (see below), whose sum is σ = 12677378762. Its totient is φ = 3271581600.

The previous prime is 6543163199. The next prime is 6543163217. The reversal of 6543163216 is 6123613456.

It can be written as a sum of positive squares in only one way, i.e., 4369738816 + 2173424400 = 66104^2 + 46620^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543163217) 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 as a sum of consecutive naturals, namely, 204473835 + ... + 204473866.

Almost surely, 2^6543163216 is an apocalyptic number.

It is an amenable number.

6543163216 is a deficient number, since it is larger than the sum of its proper divisors (6134215546).

6543163216 is a wasteful number, since it uses less digits than its factorization.

6543163216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408947709 (or 408947703 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The square root of 6543163216 is about 80889.8214610466. The cubic root of 6543163216 is about 1870.3774216037.

It can be divided in two parts, 654 and 3163216, that added together give a triangular number (3163870 = T₂₅₁₅).

The spelling of 6543163216 in words is "six billion, five hundred forty-three million, one hundred sixty-three thousand, two hundred sixteen".