21413404452448 has 12 divisors (see below), whose sum is σ = 42157640015820. Its totient is φ = 10706702226208.

The previous prime is 21413404452437. The next prime is 21413404452533. The reversal of 21413404452448 is 84425440431412.

It is a junction number, because it is equal to n+sod(n) for n = 21413404452398 and 21413404452407.

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 as a sum of consecutive naturals, namely, 334584444538 + ... + 334584444601.

It is an arithmetic number, because the mean of its divisors is an integer number (3513136667985).

Almost surely, 2^{21413404452448} is an apocalyptic number.

It is an amenable number.

21413404452448 is a deficient number, since it is larger than the sum of its proper divisors (20744235563372).

21413404452448 is an equidigital number, since it uses as much as digits as its factorization.

21413404452448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669168889149 (or 669168889141 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 46.

The spelling of 21413404452448 in words is "twenty-one trillion, four hundred thirteen billion, four hundred four million, four hundred fifty-two thousand, four hundred forty-eight".