44027728565 has 4 divisors (see below), whose sum is σ = 52833274284. Its totient is φ = 35222182848.

The previous prime is 44027728529. The next prime is 44027728567. The reversal of 44027728565 is 56582772044.

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 23925593041 + 20102135524 = 154679^2 + 141782^2 .

It is a cyclic number.

It is not a de Polignac number, because 44027728565 - 2⁸ = 44027728309 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 (44027728567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4402772852 + ... + 4402772861.

It is an arithmetic number, because the mean of its divisors is an integer number (13208318571).

Almost surely, 2^44027728565 is an apocalyptic number.

It is an amenable number.

44027728565 is a deficient number, since it is larger than the sum of its proper divisors (8805545719).

44027728565 is an equidigital number, since it uses as much as digits as its factorization.

44027728565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8805545718.

The product of its (nonzero) digits is 3763200, while the sum is 50.

The spelling of 44027728565 in words is "forty-four billion, twenty-seven million, seven hundred twenty-eight thousand, five hundred sixty-five".