56854845865 has 8 divisors (see below), whose sum is σ = 69160415688. Its totient is φ = 44860809600.

The previous prime is 56854845829. The next prime is 56854845911.

56854845865 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 16997119129 + 39857726736 = 130373^2 + 199644^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56854845865 - 2¹⁹ = 56854321577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56854845797 and 56854845806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77882986 + ... + 77883715.

It is an arithmetic number, because the mean of its divisors is an integer number (8645051961).

Almost surely, 2^56854845865 is an apocalyptic number.

It is an amenable number.

56854845865 is a deficient number, since it is larger than the sum of its proper divisors (12305569823).

56854845865 is a wasteful number, since it uses less digits than its factorization.

56854845865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155766779.

The product of its digits is 184320000, while the sum is 64.

The spelling of 56854845865 in words is "fifty-six billion, eight hundred fifty-four million, eight hundred forty-five thousand, eight hundred sixty-five".