28205956711 has 2 divisors, whose sum is σ = 28205956712. Its totient is φ = 28205956710.

The previous prime is 28205956693. The next prime is 28205956721. The reversal of 28205956711 is 11765950282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28205956711 - 2⁵ = 28205956679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28205956721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14102978355 + 14102978356.

It is an arithmetic number, because the mean of its divisors is an integer number (14102978356).

Almost surely, 2^28205956711 is an apocalyptic number.

28205956711 is a deficient number, since it is larger than the sum of its proper divisors (1).

28205956711 is an equidigital number, since it uses as much as digits as its factorization.

28205956711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 28205956711 in words is "twenty-eight billion, two hundred five million, nine hundred fifty-six thousand, seven hundred eleven".