42165566013 has 4 divisors (see below), whose sum is σ = 56220754688. Its totient is φ = 28110377340.

The previous prime is 42165566011. The next prime is 42165566033. The reversal of 42165566013 is 31066556124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42165566013 - 2¹ = 42165566011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42165566011) by changing a digit.

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, 7027594333 + ... + 7027594338.

It is an arithmetic number, because the mean of its divisors is an integer number (14055188672).

Almost surely, 2^42165566013 is an apocalyptic number.

It is an amenable number.

42165566013 is a deficient number, since it is larger than the sum of its proper divisors (14055188675).

42165566013 is a wasteful number, since it uses less digits than its factorization.

42165566013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14055188674.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 42165566013 in words is "forty-two billion, one hundred sixty-five million, five hundred sixty-six thousand, thirteen".