32511521140 has 96 divisors (see below), whose sum is σ = 82738333440. Its totient is φ = 10475771904.

The previous prime is 32511521093. The next prime is 32511521143. The reversal of 32511521140 is 4112511523.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32511521143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1677787 + ... + 1697053.

It is an arithmetic number, because the mean of its divisors is an integer number (861857640).

Almost surely, 2^32511521140 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 32511521140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41369166720).

32511521140 is an abundant number, since it is smaller than the sum of its proper divisors (50226812300).

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

32511521140 is a wasteful number, since it uses less digits than its factorization.

32511521140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20009 (or 20007 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 32511521140 in words is "thirty-two billion, five hundred eleven million, five hundred twenty-one thousand, one hundred forty".