32160781056 has 144 divisors (see below), whose sum is σ = 87358924800. Its totient is φ = 10500624384.

The previous prime is 32160781043. The next prime is 32160781057. The reversal of 32160781056 is 65018706123.

It is not an unprimeable number, because it can be changed into a prime (32160781057) 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, 14362785 + ... + 14365023.

It is an arithmetic number, because the mean of its divisors is an integer number (606659200).

Almost surely, 2^32160781056 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 32160781056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43679462400).

32160781056 is an abundant number, since it is smaller than the sum of its proper divisors (55198143744).

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

32160781056 is a wasteful number, since it uses less digits than its factorization.

32160781056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2634 (or 2620 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 32160781056 in words is "thirty-two billion, one hundred sixty million, seven hundred eighty-one thousand, fifty-six".