32320012140 has 144 divisors (see below), whose sum is σ = 105982164288. Its totient is φ = 7925294592.

The previous prime is 32320012063. The next prime is 32320012159. The reversal of 32320012140 is 4121002323.

32320012140 is a `hidden beast` number, since 323 + 200 + 1 + 2 + 140 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 589162 + ... + 641678.

It is an arithmetic number, because the mean of its divisors is an integer number (735987252).

Almost surely, 2^32320012140 is an apocalyptic number.

32320012140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32320012140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52991082144).

32320012140 is an abundant number, since it is smaller than the sum of its proper divisors (73662152148).

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

32320012140 is a wasteful number, since it uses less digits than its factorization.

32320012140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52808 (or 52803 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 32320012140 its reverse (4121002323), we get a palindrome (36441014463).

The spelling of 32320012140 in words is "thirty-two billion, three hundred twenty million, twelve thousand, one hundred forty".