28805337823 has 2 divisors, whose sum is σ = 28805337824. Its totient is φ = 28805337822.

The previous prime is 28805337787. The next prime is 28805337871. The reversal of 28805337823 is 32873350882.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28805337823 - 2⁹ = 28805337311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28805337893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14402668911 + 14402668912.

It is an arithmetic number, because the mean of its divisors is an integer number (14402668912).

Almost surely, 2^28805337823 is an apocalyptic number.

28805337823 is a deficient number, since it is larger than the sum of its proper divisors (1).

28805337823 is an equidigital number, since it uses as much as digits as its factorization.

28805337823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 28805337823 in words is "twenty-eight billion, eight hundred five million, three hundred thirty-seven thousand, eight hundred twenty-three".