32543221440 has 112 divisors (see below), whose sum is σ = 103484952288. Its totient is φ = 8664735744.

The previous prime is 32543221423. The next prime is 32543221453. The reversal of 32543221440 is 4412234523.

It is a super-2 number, since 2×32543221440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 32543221398 and 32543221407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600924 + ... + 652836.

Almost surely, 2^32543221440 is an apocalyptic number.

32543221440 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 32543221440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51742476144).

32543221440 is an abundant number, since it is smaller than the sum of its proper divisors (70941730848).

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

32543221440 is a wasteful number, since it uses less digits than its factorization.

32543221440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52586 (or 52576 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 32543221440 its reverse (4412234523), we get a palindrome (36955455963).

The spelling of 32543221440 in words is "thirty-two billion, five hundred forty-three million, two hundred twenty-one thousand, four hundred forty".