442523550664 has 32 divisors (see below), whose sum is σ = 895064136120. Its totient is φ = 203897189376.

The previous prime is 442523550647. The next prime is 442523550709. The reversal of 442523550664 is 466055325244.

It can be written as a sum of positive squares in 4 ways, for example, as 179089776100 + 263433774564 = 423190^2 + 513258^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3526047 + ... + 3649390.

Almost surely, 2^442523550664 is an apocalyptic number.

It is an amenable number.

442523550664 is an abundant number, since it is smaller than the sum of its proper divisors (452540585456).

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

442523550664 is a wasteful number, since it uses less digits than its factorization.

442523550664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7176049 (or 7176045 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 46.

The spelling of 442523550664 in words is "four hundred forty-two billion, five hundred twenty-three million, five hundred fifty thousand, six hundred sixty-four".