21334450504340 has 24 divisors (see below), whose sum is σ = 45036913324032. Its totient is φ = 8489100722720.

The previous prime is 21334450504321. The next prime is 21334450504379. The reversal of 21334450504340 is 4340505443312.

21334450504340 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 21334450504294 and 21334450504303.

It is a congruent 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, 2792463524 + ... + 2792471163.

It is an arithmetic number, because the mean of its divisors is an integer number (1876538055168).

Almost surely, 2^{21334450504340} is an apocalyptic number.

21334450504340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21334450504340 is an abundant number, since it is smaller than the sum of its proper divisors (23702462819692).

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

21334450504340 is a wasteful number, since it uses less digits than its factorization.

21334450504340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5584934887 (or 5584934885 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 21334450504340 its reverse (4340505443312), we get a palindrome (25674955947652).

The spelling of 21334450504340 in words is "twenty-one trillion, three hundred thirty-four billion, four hundred fifty million, five hundred four thousand, three hundred forty".