56021801828 has 24 divisors (see below), whose sum is σ = 99297206400. Its totient is φ = 27651300768.

The previous prime is 56021801813. The next prime is 56021801893. The reversal of 56021801828 is 82810812065.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2207918 + ... + 2233146.

It is an arithmetic number, because the mean of its divisors is an integer number (4137383600).

Almost surely, 2^56021801828 is an apocalyptic number.

It is an amenable number.

56021801828 is a deficient number, since it is larger than the sum of its proper divisors (43275404572).

56021801828 is a wasteful number, since it uses less digits than its factorization.

56021801828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32339 (or 32337 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 41.

The spelling of 56021801828 in words is "fifty-six billion, twenty-one million, eight hundred one thousand, eight hundred twenty-eight".