21413043044 has 24 divisors (see below), whose sum is σ = 38733854208. Its totient is φ = 10347160320.

The previous prime is 21413043023. The next prime is 21413043053. The reversal of 21413043044 is 44034031412.

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, 24077 + ... + 208340.

It is an arithmetic number, because the mean of its divisors is an integer number (1613910592).

Almost surely, 2^21413043044 is an apocalyptic number.

It is an amenable number.

21413043044 is a deficient number, since it is larger than the sum of its proper divisors (17320811164).

21413043044 is a wasteful number, since it uses less digits than its factorization.

21413043044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233195 (or 233193 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21413043044 its reverse (44034031412), we get a palindrome (65447074456).

The spelling of 21413043044 in words is "twenty-one billion, four hundred thirteen million, forty-three thousand, forty-four".