442588665663 has 6 divisors (see below), whose sum is σ = 639294739304. Its totient is φ = 295059110436.

The previous prime is 442588665637. The next prime is 442588665679. The reversal of 442588665663 is 366566885244.

It is a happy number.

442588665663 is a `hidden beast` number, since 4 + 4 + 2 + 5 + 8 + 8 + 66 + 566 + 3 = 666.

It is not a de Polignac number, because 442588665663 - 2⁹ = 442588665151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442588665663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442588665763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24588259195 + ... + 24588259212.

Almost surely, 2^442588665663 is an apocalyptic number.

442588665663 is a deficient number, since it is larger than the sum of its proper divisors (196706073641).

442588665663 is a wasteful number, since it uses less digits than its factorization.

442588665663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49176518413 (or 49176518410 counting only the distinct ones).

The product of its digits is 199065600, while the sum is 63.

The spelling of 442588665663 in words is "four hundred forty-two billion, five hundred eighty-eight million, six hundred sixty-five thousand, six hundred sixty-three".