1444428586641 has 4 divisors (see below), whose sum is σ = 1925904782192. Its totient is φ = 962952391092.

The previous prime is 1444428586639. The next prime is 1444428586651. The reversal of 1444428586641 is 1466858244441.

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 not a de Polignac number, because 1444428586641 - 2¹ = 1444428586639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444428586621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240738097771 + ... + 240738097776.

It is an arithmetic number, because the mean of its divisors is an integer number (481476195548).

Almost surely, 2^{1444428586641} is an apocalyptic number.

It is an amenable number.

1444428586641 is a deficient number, since it is larger than the sum of its proper divisors (481476195551).

1444428586641 is an equidigital number, since it uses as much as digits as its factorization.

1444428586641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481476195550.

The product of its digits is 23592960, while the sum is 57.

The spelling of 1444428586641 in words is "one trillion, four hundred forty-four billion, four hundred twenty-eight million, five hundred eighty-six thousand, six hundred forty-one".