56800289405 has 4 divisors (see below), whose sum is σ = 68160347292. Its totient is φ = 45440231520.

The previous prime is 56800289389. The next prime is 56800289419. The reversal of 56800289405 is 50498200865.

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 25104184249 + 31696105156 = 158443^2 + 178034^2 .

It is not a de Polignac number, because 56800289405 - 2⁴ = 56800289389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56800289405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5680028936 + ... + 5680028945.

It is an arithmetic number, because the mean of its divisors is an integer number (17040086823).

Almost surely, 2^56800289405 is an apocalyptic number.

It is an amenable number.

56800289405 is a deficient number, since it is larger than the sum of its proper divisors (11360057887).

56800289405 is a wasteful number, since it uses less digits than its factorization.

56800289405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11360057886.

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 56800289405 in words is "fifty-six billion, eight hundred million, two hundred eighty-nine thousand, four hundred five".