56444447100221 has 16 divisors (see below), whose sum is σ = 57110531587200. Its totient is φ = 55779079276800.

The previous prime is 56444447100199. The next prime is 56444447100263. The reversal of 56444447100221 is 12200174444465.

It is a cyclic number.

It is not a de Polignac number, because 56444447100221 - 2¹⁰ = 56444447099197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56444447102221) 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, 1476849650 + ... + 1476887868.

It is an arithmetic number, because the mean of its divisors is an integer number (3569408224200).

Almost surely, 2^{56444447100221} is an apocalyptic number.

It is an amenable number.

56444447100221 is a deficient number, since it is larger than the sum of its proper divisors (666084486979).

56444447100221 is a wasteful number, since it uses less digits than its factorization.

56444447100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47140.

The product of its (nonzero) digits is 860160, while the sum is 44.

The spelling of 56444447100221 in words is "fifty-six trillion, four hundred forty-four billion, four hundred forty-seven million, one hundred thousand, two hundred twenty-one".