21424113044 has 24 divisors (see below), whose sum is σ = 38224327680. Its totient is φ = 10503138464.

The previous prime is 21424113023. The next prime is 21424113079. The reversal of 21424113044 is 44031142412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303677 + ... + 367515.

It is an arithmetic number, because the mean of its divisors is an integer number (1592680320).

Almost surely, 2^21424113044 is an apocalyptic number.

It is an amenable number.

21424113044 is a deficient number, since it is larger than the sum of its proper divisors (16800214636).

21424113044 is a wasteful number, since it uses less digits than its factorization.

21424113044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65479 (or 65477 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21424113044 its reverse (44031142412), we get a palindrome (65455255456).

The spelling of 21424113044 in words is "twenty-one billion, four hundred twenty-four million, one hundred thirteen thousand, forty-four".