42555544512 has 56 divisors (see below), whose sum is σ = 121256029776. Its totient is φ = 13094012928.

The previous prime is 42555544463. The next prime is 42555544513. The reversal of 42555544512 is 21544555524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42555544513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8522253 + ... + 8527244.

It is an arithmetic number, because the mean of its divisors is an integer number (2165286246).

Almost surely, 2^42555544512 is an apocalyptic number.

It is an amenable number.

42555544512 is an abundant number, since it is smaller than the sum of its proper divisors (78700485264).

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

42555544512 is a wasteful number, since it uses less digits than its factorization.

42555544512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17049525 (or 17049515 counting only the distinct ones).

The product of its digits is 800000, while the sum is 42.

The spelling of 42555544512 in words is "forty-two billion, five hundred fifty-five million, five hundred forty-four thousand, five hundred twelve".