42366545666 has 8 divisors (see below), whose sum is σ = 63671796684. Its totient is φ = 21142613440.

The previous prime is 42366545659. The next prime is 42366545671. The reversal of 42366545666 is 66654566324.

It can be written as a sum of positive squares in 2 ways, for example, as 36393574441 + 5972971225 = 190771^2 + 77285^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 20328395 + ... + 20330478.

Almost surely, 2^42366545666 is an apocalyptic number.

42366545666 is a deficient number, since it is larger than the sum of its proper divisors (21305251018).

42366545666 is a wasteful number, since it uses less digits than its factorization.

42366545666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40659396.

The product of its digits is 18662400, while the sum is 53.

The spelling of 42366545666 in words is "forty-two billion, three hundred sixty-six million, five hundred forty-five thousand, six hundred sixty-six".