42506535552 has 128 divisors (see below), whose sum is σ = 122213266560. Its totient is φ = 13012242432.

The previous prime is 42506535527. The next prime is 42506535559. The reversal of 42506535552 is 25553560524.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (42506535559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 961813 + ... + 1005035.

It is an arithmetic number, because the mean of its divisors is an integer number (954791145).

Almost surely, 2^42506535552 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 42506535552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61106633280).

42506535552 is an abundant number, since it is smaller than the sum of its proper divisors (79706731008).

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

42506535552 is a wasteful number, since it uses less digits than its factorization.

42506535552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43450 (or 43438 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 42.

The spelling of 42506535552 in words is "forty-two billion, five hundred six million, five hundred thirty-five thousand, five hundred fifty-two".