56388682821 has 8 divisors (see below), whose sum is σ = 75198982464. Its totient is φ = 37585419200.

The previous prime is 56388682811. The next prime is 56388682829. The reversal of 56388682821 is 12828688365.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56388682821 - 2¹¹ = 56388680773 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56388682829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1740276 + ... + 1772381.

It is an arithmetic number, because the mean of its divisors is an integer number (9399872808).

Almost surely, 2^56388682821 is an apocalyptic number.

It is an amenable number.

56388682821 is a deficient number, since it is larger than the sum of its proper divisors (18810299643).

56388682821 is a wasteful number, since it uses less digits than its factorization.

56388682821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3518011.

The product of its digits is 8847360, while the sum is 57.

The spelling of 56388682821 in words is "fifty-six billion, three hundred eighty-eight million, six hundred eighty-two thousand, eight hundred twenty-one".