56685403842 has 16 divisors (see below), whose sum is σ = 117280146240. Its totient is φ = 18243578192.

The previous prime is 56685403811. The next prime is 56685403843. The reversal of 56685403842 is 24830458665.

It is not an unprimeable number, because it can be changed into a prime (56685403843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162888918 + ... + 162889265.

It is an arithmetic number, because the mean of its divisors is an integer number (7330009140).

Almost surely, 2^56685403842 is an apocalyptic number.

56685403842 is an abundant number, since it is smaller than the sum of its proper divisors (60594742398).

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

56685403842 is a wasteful number, since it uses less digits than its factorization.

56685403842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325778217.

The product of its (nonzero) digits is 5529600, while the sum is 51.

The spelling of 56685403842 in words is "fifty-six billion, six hundred eighty-five million, four hundred three thousand, eight hundred forty-two".