56855055865 has 8 divisors (see below), whose sum is σ = 68479697160. Its totient is φ = 45314957952.

The previous prime is 56855055823. The next prime is 56855055877.

56855055865 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 85322169 + 56769733696 = 9237^2 + 238264^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 56855055865 - 2⁹ = 56855055353 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21134364 + ... + 21137053.

It is an arithmetic number, because the mean of its divisors is an integer number (8559962145).

Almost surely, 2^56855055865 is an apocalyptic number.

It is an amenable number.

56855055865 is a deficient number, since it is larger than the sum of its proper divisors (11624641295).

56855055865 is a wasteful number, since it uses less digits than its factorization.

56855055865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42271691.

The product of its (nonzero) digits is 36000000, while the sum is 58.

The spelling of 56855055865 in words is "fifty-six billion, eight hundred fifty-five million, fifty-five thousand, eight hundred sixty-five".