42644646576 has 60 divisors (see below), whose sum is σ = 136395182352. Its totient is φ = 12184184448.

The previous prime is 42644646563. The next prime is 42644646673. The reversal of 42644646576 is 67564644624.

42644646576 is a `hidden beast` number, since 4 + 2 + 6 + 4 + 4 + 64 + 6 + 576 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21152091 + ... + 21154106.

Almost surely, 2^42644646576 is an apocalyptic number.

It is an amenable number.

42644646576 is an abundant number, since it is smaller than the sum of its proper divisors (93750535776).

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

42644646576 is a wasteful number, since it uses less digits than its factorization.

42644646576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42306218 (or 42306209 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 54.

The spelling of 42644646576 in words is "forty-two billion, six hundred forty-four million, six hundred forty-six thousand, five hundred seventy-six".