56516005803 has 4 divisors (see below), whose sum is σ = 75354674408. Its totient is φ = 37677337200.

The previous prime is 56516005801. The next prime is 56516005807. The reversal of 56516005803 is 30850061565.

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

It is not a de Polignac number, because 56516005803 - 2¹ = 56516005801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56516005801) 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, 9419334298 + ... + 9419334303.

It is an arithmetic number, because the mean of its divisors is an integer number (18838668602).

Almost surely, 2^56516005803 is an apocalyptic number.

56516005803 is a deficient number, since it is larger than the sum of its proper divisors (18838668605).

56516005803 is a wasteful number, since it uses less digits than its factorization.

56516005803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18838668604.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 56516005803 in words is "fifty-six billion, five hundred sixteen million, five thousand, eight hundred three".