56843785993 has 2 divisors, whose sum is σ = 56843785994. Its totient is φ = 56843785992.

The previous prime is 56843785991. The next prime is 56843785997. The reversal of 56843785993 is 39958734865.

56843785993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28551536784 + 28292249209 = 168972^2 + 168203^2 .

It is a cyclic number.

It is not a de Polignac number, because 56843785993 - 2¹ = 56843785991 is a prime.

Together with 56843785991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56843785991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28421892996 + 28421892997.

It is an arithmetic number, because the mean of its divisors is an integer number (28421892997).

Almost surely, 2^56843785993 is an apocalyptic number.

It is an amenable number.

56843785993 is a deficient number, since it is larger than the sum of its proper divisors (1).

56843785993 is an equidigital number, since it uses as much as digits as its factorization.

56843785993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 195955200, while the sum is 67.

The spelling of 56843785993 in words is "fifty-six billion, eight hundred forty-three million, seven hundred eighty-five thousand, nine hundred ninety-three".