56823538865 has 4 divisors (see below), whose sum is σ = 68188246644. Its totient is φ = 45458831088.

The previous prime is 56823538859. The next prime is 56823538979. The reversal of 56823538865 is 56883532865.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9925738384 + 46897800481 = 99628^2 + 216559^2 .

It is a cyclic number.

It is not a de Polignac number, because 56823538865 - 2⁶ = 56823538801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5682353882 + ... + 5682353891.

It is an arithmetic number, because the mean of its divisors is an integer number (17047061661).

Almost surely, 2^56823538865 is an apocalyptic number.

It is an amenable number.

56823538865 is a deficient number, since it is larger than the sum of its proper divisors (11364707779).

56823538865 is a wasteful number, since it uses less digits than its factorization.

56823538865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11364707778.

The product of its digits is 41472000, while the sum is 59.

The spelling of 56823538865 in words is "fifty-six billion, eight hundred twenty-three million, five hundred thirty-eight thousand, eight hundred sixty-five".