6543982071 has 24 divisors (see below), whose sum is σ = 10854455040. Its totient is φ = 3757309200.

The previous prime is 6543982069. The next prime is 6543982087. The reversal of 6543982071 is 1702893456.

6543982071 is a `hidden beast` number, since 6 + 5 + 439 + 8 + 207 + 1 = 666.

6543982071 is digitally balanced in base 3 and base 10, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6543982071 - 2¹ = 6543982069 is a prime.

6543982071 is strictly pandigital in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543982271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1737615 + ... + 1741376.

It is an arithmetic number, because the mean of its divisors is an integer number (452268960).

It is a 1-persistent number, because it is pandigital, but 2⋅6543982071 = 13087964142 is not.

Almost surely, 2^6543982071 is an apocalyptic number.

6543982071 is a deficient number, since it is larger than the sum of its proper divisors (4310472969).

6543982071 is a wasteful number, since it uses less digits than its factorization.

6543982071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479027 (or 3479024 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 6543982071 is about 80894.8828480516. The cubic root of 6543982071 is about 1870.4554421761.

The spelling of 6543982071 in words is "six billion, five hundred forty-three million, nine hundred eighty-two thousand, seventy-one".