56818261873 has 4 divisors (see below), whose sum is σ = 56823617088. Its totient is φ = 56812906660.

The previous prime is 56818261811. The next prime is 56818261889. The reversal of 56818261873 is 37816281865.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56818261873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56818261573) 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, 2661661 + ... + 2682922.

It is an arithmetic number, because the mean of its divisors is an integer number (14205904272).

Almost surely, 2^56818261873 is an apocalyptic number.

It is an amenable number.

56818261873 is a deficient number, since it is larger than the sum of its proper divisors (5355215).

56818261873 is a wasteful number, since it uses less digits than its factorization.

56818261873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5355214.

The product of its digits is 3870720, while the sum is 55.

The spelling of 56818261873 in words is "fifty-six billion, eight hundred eighteen million, two hundred sixty-one thousand, eight hundred seventy-three".