42546640566 has 8 divisors (see below), whose sum is σ = 85093281144. Its totient is φ = 14182213520.

The previous prime is 42546640561. The next prime is 42546640579. The reversal of 42546640566 is 66504664524.

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

42546640566 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42546640561) 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, 3545553375 + ... + 3545553386.

It is an arithmetic number, because the mean of its divisors is an integer number (10636660143).

Almost surely, 2^42546640566 is an apocalyptic number.

42546640566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42546640566 is a wasteful number, since it uses less digits than its factorization.

42546640566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7091106766.

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 42546640566 in words is "forty-two billion, five hundred forty-six million, six hundred forty thousand, five hundred sixty-six".