42175645056 has 160 divisors (see below), whose sum is σ = 125643287880. Its totient is φ = 14044078080.

The previous prime is 42175645009. The next prime is 42175645153. The reversal of 42175645056 is 65054657124.

42175645056 is a `hidden beast` number, since 421 + 75 + 64 + 50 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15872080 + ... + 15874736.

Almost surely, 2^42175645056 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 42175645056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62821643940).

42175645056 is an abundant number, since it is smaller than the sum of its proper divisors (83467642824).

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

42175645056 is a wasteful number, since it uses less digits than its factorization.

42175645056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4214 (or 4193 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 42175645056 in words is "forty-two billion, one hundred seventy-five million, six hundred forty-five thousand, fifty-six".