21044034059 has 2 divisors, whose sum is σ = 21044034060. Its totient is φ = 21044034058.

The previous prime is 21044034031. The next prime is 21044034061. The reversal of 21044034059 is 95043044012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21044034059 - 2²⁸ = 20775598603 is a prime.

Together with 21044034061, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21044034019) by changing a digit.

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, 10522017029 + 10522017030.

It is an arithmetic number, because the mean of its divisors is an integer number (10522017030).

Almost surely, 2^21044034059 is an apocalyptic number.

21044034059 is a deficient number, since it is larger than the sum of its proper divisors (1).

21044034059 is an equidigital number, since it uses as much as digits as its factorization.

21044034059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 21044034059 in words is "twenty-one billion, forty-four million, thirty-four thousand, fifty-nine".