56844844865 has 16 divisors (see below), whose sum is σ = 69167035728. Its totient is φ = 44840733696.

The previous prime is 56844844853. The next prime is 56844844877.

56844844865 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (56844844853) and next prime (56844844877).

It can be written as a sum of positive squares in 8 ways, for example, as 3704913424 + 53139931441 = 60868^2 + 230521^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56844844865 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56844844798 and 56844844807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1467527 + ... + 1505763.

It is an arithmetic number, because the mean of its divisors is an integer number (4322939733).

Almost surely, 2^56844844865 is an apocalyptic number.

It is an amenable number.

56844844865 is a deficient number, since it is larger than the sum of its proper divisors (12322190863).

56844844865 is a wasteful number, since it uses less digits than its factorization.

56844844865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42388.

The product of its digits is 117964800, while the sum is 62.

The spelling of 56844844865 in words is "fifty-six billion, eight hundred forty-four million, eight hundred forty-four thousand, eight hundred sixty-five".