442566665244 has 48 divisors (see below), whose sum is σ = 1251703703040. Its totient is φ = 134111110320.

The previous prime is 442566665243. The next prime is 442566665347.

442566665244 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442566665243) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 186264244 + ... + 186266619.

It is an arithmetic number, because the mean of its divisors is an integer number (26077160480).

Almost surely, 2^442566665244 is an apocalyptic number.

442566665244 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

442566665244 is an abundant number, since it is smaller than the sum of its proper divisors (809137037796).

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

442566665244 is a wasteful number, since it uses less digits than its factorization.

442566665244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372530887 (or 372530879 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 54.

The spelling of 442566665244 in words is "four hundred forty-two billion, five hundred sixty-six million, six hundred sixty-five thousand, two hundred forty-four".