42555550646 has 8 divisors (see below), whose sum is σ = 72952372560. Its totient is φ = 18238093128.

The previous prime is 42555550643. The next prime is 42555550651. The reversal of 42555550646 is 64605555524.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42555550646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42555550643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1519841081 + ... + 1519841108.

It is an arithmetic number, because the mean of its divisors is an integer number (9119046570).

Almost surely, 2^42555550646 is an apocalyptic number.

42555550646 is a deficient number, since it is larger than the sum of its proper divisors (30396821914).

42555550646 is a wasteful number, since it uses less digits than its factorization.

42555550646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3039682198.

The product of its (nonzero) digits is 3600000, while the sum is 47.

The spelling of 42555550646 in words is "forty-two billion, five hundred fifty-five million, five hundred fifty thousand, six hundred forty-six".