444445553506 has 8 divisors (see below), whose sum is σ = 666676484460. Its totient is φ = 222220058688.

The previous prime is 444445553501. The next prime is 444445553507. The reversal of 444445553506 is 605355544444.

It can be written as a sum of positive squares in 2 ways, for example, as 383761665225 + 60683888281 = 619485^2 + 246341^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 444445553506.

It is not an unprimeable number, because it can be changed into a prime (444445553501) 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, 1148091 + ... + 1485598.

Almost surely, 2^444445553506 is an apocalyptic number.

444445553506 is a deficient number, since it is larger than the sum of its proper divisors (222230930954).

444445553506 is a wasteful number, since it uses less digits than its factorization.

444445553506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718068.

The product of its (nonzero) digits is 11520000, while the sum is 49.

The spelling of 444445553506 in words is "four hundred forty-four billion, four hundred forty-five million, five hundred fifty-three thousand, five hundred six".