42918018166 has 4 divisors (see below), whose sum is σ = 64377027252. Its totient is φ = 21459009082.

The previous prime is 42918018163. The next prime is 42918018179. The reversal of 42918018166 is 66181081924.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42918018163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10729504540 + ... + 10729504543.

It is an arithmetic number, because the mean of its divisors is an integer number (16094256813).

Almost surely, 2^42918018166 is an apocalyptic number.

42918018166 is a deficient number, since it is larger than the sum of its proper divisors (21459009086).

42918018166 is a wasteful number, since it uses less digits than its factorization.

42918018166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21459009085.

The product of its (nonzero) digits is 165888, while the sum is 46.

The spelling of 42918018166 in words is "forty-two billion, nine hundred eighteen million, eighteen thousand, one hundred sixty-six".