28805116774871 has 2 divisors, whose sum is σ = 28805116774872. Its totient is φ = 28805116774870.

The previous prime is 28805116774853. The next prime is 28805116774909. The reversal of 28805116774871 is 17847761150882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28805116774871 - 2¹⁴ = 28805116758487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28805116774798 and 28805116774807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28805116773871) 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, 14402558387435 + 14402558387436.

It is an arithmetic number, because the mean of its divisors is an integer number (14402558387436).

Almost surely, 2^{28805116774871} is an apocalyptic number.

28805116774871 is a deficient number, since it is larger than the sum of its proper divisors (1).

28805116774871 is an equidigital number, since it uses as much as digits as its factorization.

28805116774871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42147840, while the sum is 65.

The spelling of 28805116774871 in words is "twenty-eight trillion, eight hundred five billion, one hundred sixteen million, seven hundred seventy-four thousand, eight hundred seventy-one".