32191440384 has 160 divisors (see below), whose sum is σ = 90592951680. Its totient is φ = 10129784832.

The previous prime is 32191440367. The next prime is 32191440467. The reversal of 32191440384 is 48304419123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8957692 + ... + 8961284.

It is an arithmetic number, because the mean of its divisors is an integer number (566205948).

Almost surely, 2^32191440384 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 32191440384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45296475840).

32191440384 is an abundant number, since it is smaller than the sum of its proper divisors (58401511296).

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

32191440384 is a wasteful number, since it uses less digits than its factorization.

32191440384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940 (or 3924 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 32191440384 in words is "thirty-two billion, one hundred ninety-one million, four hundred forty thousand, three hundred eighty-four".