444445553508 has 72 divisors (see below), whose sum is σ = 1156900014816. Its totient is φ = 132670285440.

The previous prime is 444445553507. The next prime is 444445553521. The reversal of 444445553508 is 805355544444.

It is a super-2 number, since 2×444445553508² (a number of 24 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 2186985 + ... + 2381552.

Almost surely, 2^444445553508 is an apocalyptic number.

It is an amenable number.

444445553508 is an abundant number, since it is smaller than the sum of its proper divisors (712454461308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444445553508 is a wasteful number, since it uses less digits than its factorization.

444445553508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4568633 (or 4568620 counting only the distinct ones).

The product of its (nonzero) digits is 15360000, while the sum is 51.

The spelling of 444445553508 in words is "four hundred forty-four billion, four hundred forty-five million, five hundred fifty-three thousand, five hundred eight".