21483439789 has 16 divisors (see below), whose sum is σ = 24905961216. Its totient is φ = 18149443200.

The previous prime is 21483439781. The next prime is 21483439793. The reversal of 21483439789 is 98793438412.

It is not a de Polignac number, because 21483439789 - 2³ = 21483439781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21483439781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2837569 + ... + 2845129.

It is an arithmetic number, because the mean of its divisors is an integer number (1556622576).

Almost surely, 2^21483439789 is an apocalyptic number.

It is an amenable number.

21483439789 is a deficient number, since it is larger than the sum of its proper divisors (3422521427).

21483439789 is an equidigital number, since it uses as much as digits as its factorization.

21483439789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13356.

The product of its digits is 10450944, while the sum is 58.

The spelling of 21483439789 in words is "twenty-one billion, four hundred eighty-three million, four hundred thirty-nine thousand, seven hundred eighty-nine".