42856550912 has 90 divisors (see below), whose sum is σ = 99685978227. Its totient is φ = 18353040384.

The previous prime is 42856550909. The next prime is 42856550959. The reversal of 42856550912 is 21905565824.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 21428275456 + 21428275456 = 146384^2 + 146384^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=146384.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 32789363 + ... + 32790669.

Almost surely, 2^42856550912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42856550912

42856550912 is an abundant number, since it is smaller than the sum of its proper divisors (56829427315).

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

42856550912 is an frugal number, since it uses more digits than its factorization.

42856550912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 47.

The spelling of 42856550912 in words is "forty-two billion, eight hundred fifty-six million, five hundred fifty thousand, nine hundred twelve".