56281613689 has 24 divisors (see below), whose sum is σ = 65731765248. Its totient is φ = 48049212960.

The previous prime is 56281613683. The next prime is 56281613741. The reversal of 56281613689 is 98631618265.

56281613689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56281613689 - 2⁹ = 56281613177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56281613683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17658154 + ... + 17661340.

It is an arithmetic number, because the mean of its divisors is an integer number (2738823552).

Almost surely, 2^56281613689 is an apocalyptic number.

It is an amenable number.

56281613689 is a deficient number, since it is larger than the sum of its proper divisors (9450151559).

56281613689 is a wasteful number, since it uses less digits than its factorization.

56281613689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4525 (or 4518 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 55.

The spelling of 56281613689 in words is "fifty-six billion, two hundred eighty-one million, six hundred thirteen thousand, six hundred eighty-nine".