6543166996 has 6 divisors (see below), whose sum is σ = 11450542250. Its totient is φ = 3271583496.

The previous prime is 6543166967. The next prime is 6543166997. The reversal of 6543166996 is 6996613456.

It can be written as a sum of positive squares in only one way, i.e., 3897504900 + 2645662096 = 62430^2 + 51436^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543166997) 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, 817895871 + ... + 817895878.

Almost surely, 2^6543166996 is an apocalyptic number.

It is an amenable number.

6543166996 is a deficient number, since it is larger than the sum of its proper divisors (4907375254).

6543166996 is a wasteful number, since it uses less digits than its factorization.

6543166996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635791753 (or 1635791751 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 55.

The square root of 6543166996 is about 80889.8448261585. The cubic root of 6543166996 is about 1870.3777817774.

The spelling of 6543166996 in words is "six billion, five hundred forty-three million, one hundred sixty-six thousand, nine hundred ninety-six".