442279782664 has 16 divisors (see below), whose sum is σ = 865330009920. Its totient is φ = 211525113360.

The previous prime is 442279782647. The next prime is 442279782667. The reversal of 442279782664 is 466287972244.

It is a super-2 number, since 2×442279782664² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442279782667) 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, 1201847052 + ... + 1201847419.

It is an arithmetic number, because the mean of its divisors is an integer number (54083125620).

Almost surely, 2^442279782664 is an apocalyptic number.

It is an amenable number.

442279782664 is a deficient number, since it is larger than the sum of its proper divisors (423050227256).

442279782664 is a wasteful number, since it uses less digits than its factorization.

442279782664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403694500 (or 2403694496 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 61.

The spelling of 442279782664 in words is "four hundred forty-two billion, two hundred seventy-nine million, seven hundred eighty-two thousand, six hundred sixty-four".