21043341413340 has 24 divisors (see below), whose sum is σ = 58921355957520. Its totient is φ = 5611557710208.

The previous prime is 21043341413327. The next prime is 21043341413387. The reversal of 21043341413340 is 4331414334012.

It is a congruent number.

It is an unprimeable number.

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, 175361178385 + ... + 175361178504.

It is an arithmetic number, because the mean of its divisors is an integer number (2455056498230).

Almost surely, 2^{21043341413340} is an apocalyptic number.

21043341413340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21043341413340 is an abundant number, since it is smaller than the sum of its proper divisors (37878014544180).

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

21043341413340 is a wasteful number, since it uses less digits than its factorization.

21043341413340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350722356901 (or 350722356899 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 21043341413340 its reverse (4331414334012), we get a palindrome (25374755747352).

The spelling of 21043341413340 in words is "twenty-one trillion, forty-three billion, three hundred forty-one million, four hundred thirteen thousand, three hundred forty".