1444788728159 has 16 divisors (see below), whose sum is σ = 1721163755520. Its totient is φ = 1186559818080.

The previous prime is 1444788728107. The next prime is 1444788728167. The reversal of 1444788728159 is 9518278874441.

It is not a de Polignac number, because 1444788728159 - 2²⁸ = 1444520292703 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 (1444788728189) 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, 27138239 + ... + 27191424.

It is an arithmetic number, because the mean of its divisors is an integer number (107572734720).

Almost surely, 2^{1444788728159} is an apocalyptic number.

1444788728159 is a deficient number, since it is larger than the sum of its proper divisors (276375027361).

1444788728159 is a wasteful number, since it uses less digits than its factorization.

1444788728159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54329830.

The product of its digits is 144506880, while the sum is 68.

The spelling of 1444788728159 in words is "one trillion, four hundred forty-four billion, seven hundred eighty-eight million, seven hundred twenty-eight thousand, one hundred fifty-nine".