21132342144433 has 8 divisors (see below), whose sum is σ = 22855580348328. Its totient is φ = 19423057286784.

The previous prime is 21132342144383. The next prime is 21132342144449. The reversal of 21132342144433 is 33444124323112.

It can be written as a sum of positive squares in 4 ways, for example, as 836524256689 + 20295817887744 = 914617^2 + 4505088^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21132342144433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21132342144392 and 21132342144401.

It is not an unprimeable number, because it can be changed into a prime (21132342144493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3488333410 + ... + 3488339467.

It is an arithmetic number, because the mean of its divisors is an integer number (2856947543541).

Almost surely, 2^{21132342144433} is an apocalyptic number.

It is an amenable number.

21132342144433 is a deficient number, since it is larger than the sum of its proper divisors (1723238203895).

21132342144433 is a wasteful number, since it uses less digits than its factorization.

21132342144433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6976673123.

The product of its digits is 165888, while the sum is 37.

Adding to 21132342144433 its reverse (33444124323112), we get a palindrome (54576466467545).

The spelling of 21132342144433 in words is "twenty-one trillion, one hundred thirty-two billion, three hundred forty-two million, one hundred forty-four thousand, four hundred thirty-three".