6543968567 has 2 divisors, whose sum is σ = 6543968568. Its totient is φ = 6543968566.

The previous prime is 6543968527. The next prime is 6543968603. The reversal of 6543968567 is 7658693456.

6543968567 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6543968567 - 2⁶ = 6543968503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6543968527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3271984283 + 3271984284.

It is an arithmetic number, because the mean of its divisors is an integer number (3271984284).

Almost surely, 2^6543968567 is an apocalyptic number.

6543968567 is a deficient number, since it is larger than the sum of its proper divisors (1).

6543968567 is an equidigital number, since it uses as much as digits as its factorization.

6543968567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32659200, while the sum is 59.

The square root of 6543968567 is about 80894.7993816661. The cubic root of 6543968567 is about 1870.4541555666.

The spelling of 6543968567 in words is "six billion, five hundred forty-three million, nine hundred sixty-eight thousand, five hundred sixty-seven".