56100442721 has 16 divisors (see below), whose sum is σ = 58040515008. Its totient is φ = 54188217600.

The previous prime is 56100442711. The next prime is 56100442733. The reversal of 56100442721 is 12724400165.

56100442721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56100442721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56100442711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10846466 + ... + 10851636.

It is an arithmetic number, because the mean of its divisors is an integer number (3627532188).

Almost surely, 2^56100442721 is an apocalyptic number.

It is an amenable number.

56100442721 is a deficient number, since it is larger than the sum of its proper divisors (1940072287).

56100442721 is a wasteful number, since it uses less digits than its factorization.

56100442721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7792.

The product of its (nonzero) digits is 13440, while the sum is 32.

Adding to 56100442721 its reverse (12724400165), we get a palindrome (68824842886).

The spelling of 56100442721 in words is "fifty-six billion, one hundred million, four hundred forty-two thousand, seven hundred twenty-one".