444247026665 has 8 divisors (see below), whose sum is σ = 574103849928. Its totient is φ = 328059342720.

The previous prime is 444247026649. The next prime is 444247026677. The reversal of 444247026665 is 566620742444.

It can be written as a sum of positive squares in 4 ways, for example, as 23092753369 + 421154273296 = 151963^2 + 648964^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 444247026665 - 2⁴ = 444247026649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3417284756 + ... + 3417284885.

It is an arithmetic number, because the mean of its divisors is an integer number (71762981241).

Almost surely, 2^444247026665 is an apocalyptic number.

It is an amenable number.

444247026665 is a deficient number, since it is larger than the sum of its proper divisors (129856823263).

444247026665 is a wasteful number, since it uses less digits than its factorization.

444247026665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6834569659.

The product of its (nonzero) digits is 7741440, while the sum is 50.

The spelling of 444247026665 in words is "four hundred forty-four billion, two hundred forty-seven million, twenty-six thousand, six hundred sixty-five".