44021160665 has 4 divisors (see below), whose sum is σ = 52825392804. Its totient is φ = 35216928528.

The previous prime is 44021160643. The next prime is 44021160679. The reversal of 44021160665 is 56606112044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26071592089 + 17949568576 = 161467^2 + 133976^2 .

It is a cyclic number.

It is not a de Polignac number, because 44021160665 - 2¹⁸ = 44020898521 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4402116062 + ... + 4402116071.

It is an arithmetic number, because the mean of its divisors is an integer number (13206348201).

Almost surely, 2^44021160665 is an apocalyptic number.

It is an amenable number.

44021160665 is a deficient number, since it is larger than the sum of its proper divisors (8804232139).

44021160665 is an equidigital number, since it uses as much as digits as its factorization.

44021160665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8804232138.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 44021160665 in words is "forty-four billion, twenty-one million, one hundred sixty thousand, six hundred sixty-five".