805855758053 has 4 divisors (see below), whose sum is σ = 805875014028. Its totient is φ = 805836502080.

The previous prime is 805855758013. The next prime is 805855758067. The reversal of 805855758053 is 350857558508.

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 73082093569 + 732773664484 = 270337^2 + 856022^2 .

It is a cyclic number.

It is not a de Polignac number, because 805855758053 - 2⁸ = 805855757797 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 805855757983 and 805855758001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805855758013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9565076 + ... + 9648957.

It is an arithmetic number, because the mean of its divisors is an integer number (201468753507).

Almost surely, 2^805855758053 is an apocalyptic number.

It is an amenable number.

805855758053 is a deficient number, since it is larger than the sum of its proper divisors (19255975).

805855758053 is a wasteful number, since it uses less digits than its factorization.

805855758053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19255974.

The product of its (nonzero) digits is 33600000, while the sum is 59.

The spelling of 805855758053 in words is "eight hundred five billion, eight hundred fifty-five million, seven hundred fifty-eight thousand, fifty-three".