21404033524343 has 8 divisors (see below), whose sum is σ = 21548348232000. Its totient is φ = 21259727663328.

The previous prime is 21404033524339. The next prime is 21404033524381. The reversal of 21404033524343 is 34342533040412.

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

It is a cyclic number.

It is not a de Polignac number, because 21404033524343 - 2² = 21404033524339 is a prime.

It is a super-2 number, since 2×21404033524343² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21404033524297 and 21404033524306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21404033520343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2679905 + ... + 7070357.

It is an arithmetic number, because the mean of its divisors is an integer number (2693543529000).

Almost surely, 2^{21404033524343} is an apocalyptic number.

21404033524343 is a deficient number, since it is larger than the sum of its proper divisors (144314707657).

21404033524343 is a wasteful number, since it uses less digits than its factorization.

21404033524343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423321.

The product of its (nonzero) digits is 414720, while the sum is 38.

Adding to 21404033524343 its reverse (34342533040412), we get a palindrome (55746566564755).

The spelling of 21404033524343 in words is "twenty-one trillion, four hundred four billion, thirty-three million, five hundred twenty-four thousand, three hundred forty-three".