42665684612 has 72 divisors (see below), whose sum is σ = 79843579200. Its totient is φ = 19944400320.

The previous prime is 42665684599. The next prime is 42665684657. The reversal of 42665684612 is 21648656624.

42665684612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71227889 + ... + 71228487.

It is an arithmetic number, because the mean of its divisors is an integer number (1108938600).

Almost surely, 2^42665684612 is an apocalyptic number.

It is an amenable number.

42665684612 is a deficient number, since it is larger than the sum of its proper divisors (37177894588).

42665684612 is a wasteful number, since it uses less digits than its factorization.

42665684612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1188 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 50.

The spelling of 42665684612 in words is "forty-two billion, six hundred sixty-five million, six hundred eighty-four thousand, six hundred twelve".