56116656500 has 48 divisors (see below), whose sum is σ = 122582088720. Its totient is φ = 22442393600.

The previous prime is 56116656469. The next prime is 56116656517. The reversal of 56116656500 is 565661165.

It can be written as a sum of positive squares in 8 ways, for example, as 43321427044 + 12795229456 = 208138^2 + 113116^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4682516 + ... + 4694484.

It is an arithmetic number, because the mean of its divisors is an integer number (2553793515).

Almost surely, 2^56116656500 is an apocalyptic number.

56116656500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56116656500 is an abundant number, since it is smaller than the sum of its proper divisors (66465432220).

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

56116656500 is a wasteful number, since it uses less digits than its factorization.

56116656500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21365 (or 21353 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

It can be divided in two parts, 5611665 and 6500, that added together give a palindrome (5618165).

The spelling of 56116656500 in words is "fifty-six billion, one hundred sixteen million, six hundred fifty-six thousand, five hundred".