21404141443 has 2 divisors, whose sum is σ = 21404141444. Its totient is φ = 21404141442.

The previous prime is 21404141417. The next prime is 21404141461. The reversal of 21404141443 is 34414140412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21404141443 - 2²¹ = 21402044291 is a prime.

It is not a weakly prime, because it can be changed into another prime (21404141243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10702070721 + 10702070722.

It is an arithmetic number, because the mean of its divisors is an integer number (10702070722).

Almost surely, 2^21404141443 is an apocalyptic number.

21404141443 is a deficient number, since it is larger than the sum of its proper divisors (1).

21404141443 is an equidigital number, since it uses as much as digits as its factorization.

21404141443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 21404141443 its reverse (34414140412), we get a palindrome (55818281855).

The spelling of 21404141443 in words is "twenty-one billion, four hundred four million, one hundred forty-one thousand, four hundred forty-three".