56543634671 has 2 divisors, whose sum is σ = 56543634672. Its totient is φ = 56543634670.

The previous prime is 56543634661. The next prime is 56543634673. The reversal of 56543634671 is 17643634565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56543634671 - 2³⁴ = 39363765487 is a prime.

Together with 56543634673, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56543634673) 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 as a sum of consecutive naturals, namely, 28271817335 + 28271817336.

It is an arithmetic number, because the mean of its divisors is an integer number (28271817336).

Almost surely, 2^56543634671 is an apocalyptic number.

56543634671 is a deficient number, since it is larger than the sum of its proper divisors (1).

56543634671 is an equidigital number, since it uses as much as digits as its factorization.

56543634671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 50.

The spelling of 56543634671 in words is "fifty-six billion, five hundred forty-three million, six hundred thirty-four thousand, six hundred seventy-one".