444405537477321 has 16 divisors (see below), whose sum is σ = 677288583481344. Its totient is φ = 253908824025744.

The previous prime is 444405537477287. The next prime is 444405537477359. The reversal of 444405537477321 is 123774735504444.

It is not a de Polignac number, because 444405537477321 - 2¹⁷ = 444405537346249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (444405537477221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1549744465 + ... + 1550031198.

It is an arithmetic number, because the mean of its divisors is an integer number (42330536467584).

Almost surely, 2^{444405537477321} is an apocalyptic number.

It is an amenable number.

444405537477321 is a deficient number, since it is larger than the sum of its proper divisors (232883046004023).

444405537477321 is a wasteful number, since it uses less digits than its factorization.

444405537477321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099782500.

The product of its (nonzero) digits is 158054400, while the sum is 60.

The spelling of 444405537477321 in words is "four hundred forty-four trillion, four hundred five billion, five hundred thirty-seven million, four hundred seventy-seven thousand, three hundred twenty-one".