28073393903 has 2 divisors, whose sum is σ = 28073393904. Its totient is φ = 28073393902.

The previous prime is 28073393879. The next prime is 28073393911. The reversal of 28073393903 is 30939337082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28073393903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28073393963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14036696951 + 14036696952.

It is an arithmetic number, because the mean of its divisors is an integer number (14036696952).

Almost surely, 2^28073393903 is an apocalyptic number.

28073393903 is a deficient number, since it is larger than the sum of its proper divisors (1).

28073393903 is an equidigital number, since it uses as much as digits as its factorization.

28073393903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 47.

The spelling of 28073393903 in words is "twenty-eight billion, seventy-three million, three hundred ninety-three thousand, nine hundred three".