56643185853 has 24 divisors (see below), whose sum is σ = 90397315008. Its totient is φ = 33995567232.

The previous prime is 56643185839. The next prime is 56643185857. The reversal of 56643185853 is 35858134665.

It is a happy number.

56643185853 is a `hidden beast` number, since 5 + 6 + 6 + 43 + 18 + 585 + 3 = 666.

56643185853 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 56643185853 - 2⁵ = 56643185821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56643185853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56643185857) 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, 8044675 + ... + 8051712.

It is an arithmetic number, because the mean of its divisors is an integer number (3766554792).

Almost surely, 2^56643185853 is an apocalyptic number.

It is an amenable number.

56643185853 is a deficient number, since it is larger than the sum of its proper divisors (33754129155).

56643185853 is a wasteful number, since it uses less digits than its factorization.

56643185853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16096433 (or 16096430 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 54.

The spelling of 56643185853 in words is "fifty-six billion, six hundred forty-three million, one hundred eighty-five thousand, eight hundred fifty-three".