56645840500 has 24 divisors (see below), whose sum is σ = 123714516744. Its totient is φ = 22658336000.

The previous prime is 56645840497. The next prime is 56645840507. The reversal of 56645840500 is 504854665.

It can be written as a sum of positive squares in 4 ways, for example, as 2377342564 + 54268497936 = 48758^2 + 232956^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56645840507) 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, 56645341 + ... + 56646340.

It is an arithmetic number, because the mean of its divisors is an integer number (5154771531).

Almost surely, 2^56645840500 is an apocalyptic number.

56645840500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56645840500 is an abundant number, since it is smaller than the sum of its proper divisors (67068676244).

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

56645840500 is a wasteful number, since it uses less digits than its factorization.

56645840500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113291700 (or 113291688 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 56645840500 in words is "fifty-six billion, six hundred forty-five million, eight hundred forty thousand, five hundred".