21400441132 has 24 divisors (see below), whose sum is σ = 42987798560. Its totient is φ = 9131564160.

The previous prime is 21400441129. The next prime is 21400441159. The reversal of 21400441132 is 23114400412.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 1662369 + ... + 1675192.

Almost surely, 2^21400441132 is an apocalyptic number.

It is an amenable number.

21400441132 is an abundant number, since it is smaller than the sum of its proper divisors (21587357428).

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

21400441132 is a wasteful number, since it uses less digits than its factorization.

21400441132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3337801 (or 3337799 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21400441132 its reverse (23114400412), we get a palindrome (44514841544).

The spelling of 21400441132 in words is "twenty-one billion, four hundred million, four hundred forty-one thousand, one hundred thirty-two".