21132342144432 has 120 divisors (see below), whose sum is σ = 61053285970560. Its totient is φ = 6816404689920.

The previous prime is 21132342144383. The next prime is 21132342144449. The reversal of 21132342144432 is 23444124323112.

21132342144432 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 2 + 3 + 4 + 214 + 4 + 432 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66216028 + ... + 66534404.

It is an arithmetic number, because the mean of its divisors is an integer number (508777383088).

Almost surely, 2^{21132342144432} is an apocalyptic number.

It is an amenable number.

21132342144432 is an abundant number, since it is smaller than the sum of its proper divisors (39920943826128).

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

21132342144432 is a wasteful number, since it uses less digits than its factorization.

21132342144432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333291 (or 333282 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

Adding to 21132342144432 its reverse (23444124323112), we get a palindrome (44576466467544).

The spelling of 21132342144432 in words is "twenty-one trillion, one hundred thirty-two billion, three hundred forty-two million, one hundred forty-four thousand, four hundred thirty-two".