56685048666 has 32 divisors (see below), whose sum is σ = 119368857600. Its totient is φ = 17895754800.

The previous prime is 56685048661. The next prime is 56685048677. The reversal of 56685048666 is 66684058665.

56685048666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56685048661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374455 + ... + 503573.

It is an arithmetic number, because the mean of its divisors is an integer number (3730276800).

Almost surely, 2^56685048666 is an apocalyptic number.

56685048666 is an abundant number, since it is smaller than the sum of its proper divisors (62683808934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56685048666 is a wasteful number, since it uses less digits than its factorization.

56685048666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132994.

The product of its (nonzero) digits is 49766400, while the sum is 60.

Subtracting 56685048666 from its reverse (66684058665), we obtain a palindrome (9999009999).

It can be divided in two parts, 566850 and 48666, that added together give a palindrome (615516).

The spelling of 56685048666 in words is "fifty-six billion, six hundred eighty-five million, forty-eight thousand, six hundred sixty-six".