56543634647 has 2 divisors, whose sum is σ = 56543634648. Its totient is φ = 56543634646.

The previous prime is 56543634571. The next prime is 56543634661. The reversal of 56543634647 is 74643634565.

56543634647 is digitally balanced in base 2, 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 56543634647 - 2¹⁶ = 56543569111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56543634047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28271817323 + 28271817324.

It is an arithmetic number, because the mean of its divisors is an integer number (28271817324).

Almost surely, 2^56543634647 is an apocalyptic number.

56543634647 is a deficient number, since it is larger than the sum of its proper divisors (1).

56543634647 is an equidigital number, since it uses as much as digits as its factorization.

56543634647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 53.

The spelling of 56543634647 in words is "fifty-six billion, five hundred forty-three million, six hundred thirty-four thousand, six hundred forty-seven".