56854644645847 has 2 divisors, whose sum is σ = 56854644645848. Its totient is φ = 56854644645846.

The previous prime is 56854644645817. The next prime is 56854644645907. The reversal of 56854644645847 is 74854644645865.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56854644645847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56854644645817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28427322322923 + 28427322322924.

It is an arithmetic number, because the mean of its divisors is an integer number (28427322322924).

Almost surely, 2^{56854644645847} is an apocalyptic number.

56854644645847 is a deficient number, since it is larger than the sum of its proper divisors (1).

56854644645847 is an equidigital number, since it uses as much as digits as its factorization.

56854644645847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12386304000, while the sum is 76.

The spelling of 56854644645847 in words is "fifty-six trillion, eight hundred fifty-four billion, six hundred forty-four million, six hundred forty-five thousand, eight hundred forty-seven".