56854644645353 has 2 divisors, whose sum is σ = 56854644645354. Its totient is φ = 56854644645352.

The previous prime is 56854644645319. The next prime is 56854644645431. The reversal of 56854644645353 is 35354644645865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30127068148969 + 26727576496384 = 5488813^2 + 5169872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56854644645353 is a prime.

It is not a weakly prime, because it can be changed into another prime (56854644642353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28427322322676 + 28427322322677.

It is an arithmetic number, because the mean of its divisors is an integer number (28427322322677).

Almost surely, 2^{56854644645353} is an apocalyptic number.

It is an amenable number.

56854644645353 is a deficient number, since it is larger than the sum of its proper divisors (1).

56854644645353 is an equidigital number, since it uses as much as digits as its factorization.

56854644645353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320000, while the sum is 68.

The spelling of 56854644645353 in words is "fifty-six trillion, eight hundred fifty-four billion, six hundred forty-four million, six hundred forty-five thousand, three hundred fifty-three".