21300000044 has 6 divisors (see below), whose sum is σ = 37275000084. Its totient is φ = 10650000020.

The previous prime is 21300000023. The next prime is 21300000067. The reversal of 21300000044 is 44000000312.

It is a junction number, because it is equal to n+sod(n) for n = 21299999974 and 21300000028.

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 as a sum of consecutive naturals, namely, 2662500002 + ... + 2662500009.

It is an arithmetic number, because the mean of its divisors is an integer number (6212500014).

Almost surely, 2^21300000044 is an apocalyptic number.

It is an amenable number.

21300000044 is a deficient number, since it is larger than the sum of its proper divisors (15975000040).

21300000044 is a wasteful number, since it uses less digits than its factorization.

21300000044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5325000015 (or 5325000013 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 21300000044 its reverse (44000000312), we get a palindrome (65300000356).

The spelling of 21300000044 in words is "twenty-one billion, three hundred million, forty-four", and thus it is an aban number.