42665066111 has 4 divisors (see below), whose sum is σ = 42665488800. Its totient is φ = 42664643424.

The previous prime is 42665066071. The next prime is 42665066113. The reversal of 42665066111 is 11166056624.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42665066111 - 2³⁰ = 41591324287 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 (42665066113) 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 in 3 ways as a sum of consecutive naturals, for example, 38570 + ... + 294648.

It is an arithmetic number, because the mean of its divisors is an integer number (10666372200).

Almost surely, 2^42665066111 is an apocalyptic number.

42665066111 is a deficient number, since it is larger than the sum of its proper divisors (422689).

42665066111 is a wasteful number, since it uses less digits than its factorization.

42665066111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422688.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 42665066111 in words is "forty-two billion, six hundred sixty-five million, sixty-six thousand, one hundred eleven".