42665366631 has 8 divisors (see below), whose sum is σ = 58848781680. Its totient is φ = 27462764672.

The previous prime is 42665366591. The next prime is 42665366641. The reversal of 42665366631 is 13666356624.

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

It is a cyclic number.

It is not a de Polignac number, because 42665366631 - 2⁹ = 42665366119 is a prime.

It is a super-2 number, since 2×42665366631² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42665366641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245203170 + ... + 245203343.

It is an arithmetic number, because the mean of its divisors is an integer number (7356097710).

Almost surely, 2^42665366631 is an apocalyptic number.

42665366631 is a deficient number, since it is larger than the sum of its proper divisors (16183415049).

42665366631 is a wasteful number, since it uses less digits than its factorization.

42665366631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490406545.

The product of its digits is 2799360, while the sum is 48.

The spelling of 42665366631 in words is "forty-two billion, six hundred sixty-five million, three hundred sixty-six thousand, six hundred thirty-one".