44145541565 has 16 divisors (see below), whose sum is σ = 54427243440. Its totient is φ = 34348769280.

The previous prime is 44145541553. The next prime is 44145541567. The reversal of 44145541565 is 56514554144.

44145541565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3636331204 + 40509210361 = 60302^2 + 201269^2 .

It is not a de Polignac number, because 44145541565 - 2⁴ = 44145541549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44145541567) 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, 453095 + ... + 541835.

It is an arithmetic number, because the mean of its divisors is an integer number (3401702715).

Almost surely, 2^44145541565 is an apocalyptic number.

It is an amenable number.

44145541565 is a deficient number, since it is larger than the sum of its proper divisors (10281701875).

44145541565 is a wasteful number, since it uses less digits than its factorization.

44145541565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91472.

The product of its digits is 960000, while the sum is 44.

The spelling of 44145541565 in words is "forty-four billion, one hundred forty-five million, five hundred forty-one thousand, five hundred sixty-five".