42013566668 has 12 divisors (see below), whose sum is σ = 73525517520. Its totient is φ = 21006275952.

The previous prime is 42013566613. The next prime is 42013566671. The reversal of 42013566668 is 86666531024.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107618 + ... + 309206.

It is an arithmetic number, because the mean of its divisors is an integer number (6127126460).

Almost surely, 2^42013566668 is an apocalyptic number.

It is an amenable number.

42013566668 is a deficient number, since it is larger than the sum of its proper divisors (31511950852).

42013566668 is a wasteful number, since it uses less digits than its factorization.

42013566668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253696 (or 253694 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 47.

It can be divided in two parts, 4201356 and 6668, that added together give a palindrome (4208024).

The spelling of 42013566668 in words is "forty-two billion, thirteen million, five hundred sixty-six thousand, six hundred sixty-eight".