1444428728573 has 4 divisors (see below), whose sum is σ = 1447300356768. Its totient is φ = 1441557100380.

The previous prime is 1444428728543. The next prime is 1444428728621. The reversal of 1444428728573 is 3758278244441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1444428728573 - 2¹⁴ = 1444428712189 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 (1444428728543) 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, 1435813343 + ... + 1435814348.

It is an arithmetic number, because the mean of its divisors is an integer number (361825089192).

Almost surely, 2^{1444428728573} is an apocalyptic number.

It is an amenable number.

1444428728573 is a deficient number, since it is larger than the sum of its proper divisors (2871628195).

1444428728573 is an equidigital number, since it uses as much as digits as its factorization.

1444428728573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871628194.

The product of its digits is 48168960, while the sum is 59.

The spelling of 1444428728573 in words is "one trillion, four hundred forty-four billion, four hundred twenty-eight million, seven hundred twenty-eight thousand, five hundred seventy-three".