56863836865 has 12 divisors (see below), whose sum is σ = 75003871572. Its totient is φ = 41355517280.

The previous prime is 56863836863. The next prime is 56863836871.

It is a happy number.

56863836865 is nontrivially palindromic in base 10.

56863836865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39500767504 + 17363069361 = 198748^2 + 131769^2 .

It is not a de Polignac number, because 56863836865 - 2¹ = 56863836863 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56863836797 and 56863836806.

It is not an unprimeable number, because it can be changed into a prime (56863836863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46994302 + ... + 46995511.

It is an arithmetic number, because the mean of its divisors is an integer number (6250322631).

Almost surely, 2^56863836865 is an apocalyptic number.

56863836865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56863836865 is a deficient number, since it is larger than the sum of its proper divisors (18140034707).

56863836865 is a wasteful number, since it uses less digits than its factorization.

56863836865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93989840 (or 93989829 counting only the distinct ones).

The product of its digits is 149299200, while the sum is 64.

The spelling of 56863836865 in words is "fifty-six billion, eight hundred sixty-three million, eight hundred thirty-six thousand, eight hundred sixty-five".