56450016018 has 90 divisors (see below), whose sum is σ = 139116276453. Its totient is φ = 17095985280.

The previous prime is 56450016013. The next prime is 56450016041. The reversal of 56450016018 is 81061005465.

56450016018 is a `hidden beast` number, since 5 + 6 + 45 + 0 + 0 + 1 + 601 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38930052249 + 17519963769 = 197307^2 + 132363^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=168003.

It is not an unprimeable number, because it can be changed into a prime (56450016011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 33263746 + ... + 33265442.

Almost surely, 2^56450016018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56450016018

56450016018 is an abundant number, since it is smaller than the sum of its proper divisors (82666260435).

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

56450016018 is an equidigital number, since it uses as much as digits as its factorization.

56450016018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430 (or 1713 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 56450016018 in words is "fifty-six billion, four hundred fifty million, sixteen thousand, eighteen".