56866666865 has 8 divisors (see below), whose sum is σ = 68264467008. Its totient is φ = 45477022320.

The previous prime is 56866666859. The next prime is 56866666897.

56866666865 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 56866666865 - 2¹⁶ = 56866601329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56866666795 and 56866666804.

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 7 ways as a sum of consecutive naturals, for example, 2023547 + ... + 2051456.

It is an arithmetic number, because the mean of its divisors is an integer number (8533058376).

Almost surely, 2^56866666865 is an apocalyptic number.

It is an amenable number.

56866666865 is a deficient number, since it is larger than the sum of its proper divisors (11397800143).

56866666865 is a wasteful number, since it uses less digits than its factorization.

56866666865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4077799.

The product of its digits is 447897600, while the sum is 68.

The spelling of 56866666865 in words is "fifty-six billion, eight hundred sixty-six million, six hundred sixty-six thousand, eight hundred sixty-five".