21342041444 has 24 divisors (see below), whose sum is σ = 38548517280. Its totient is φ = 10333578816.

The previous prime is 21342041423. The next prime is 21342041453. The reversal of 21342041444 is 44414024312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659057 + ... + 690680.

It is an arithmetic number, because the mean of its divisors is an integer number (1606188220).

Almost surely, 2^21342041444 is an apocalyptic number.

It is an amenable number.

21342041444 is a deficient number, since it is larger than the sum of its proper divisors (17206475836).

21342041444 is a wasteful number, since it uses less digits than its factorization.

21342041444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349867 (or 1349865 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 21342041444 its reverse (44414024312), we get a palindrome (65756065756).

The spelling of 21342041444 in words is "twenty-one billion, three hundred forty-two million, forty-one thousand, four hundred forty-four".