28444044073 has 2 divisors, whose sum is σ = 28444044074. Its totient is φ = 28444044072.

The previous prime is 28444044061. The next prime is 28444044119. The reversal of 28444044073 is 37044044482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21990813849 + 6453230224 = 148293^2 + 80332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28444044073 is a prime.

It is not a weakly prime, because it can be changed into another prime (28444044023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14222022036 + 14222022037.

It is an arithmetic number, because the mean of its divisors is an integer number (14222022037).

Almost surely, 2^28444044073 is an apocalyptic number.

It is an amenable number.

28444044073 is a deficient number, since it is larger than the sum of its proper divisors (1).

28444044073 is an equidigital number, since it uses as much as digits as its factorization.

28444044073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 344064, while the sum is 40.

The spelling of 28444044073 in words is "twenty-eight billion, four hundred forty-four million, forty-four thousand, seventy-three".