28948550711 has 2 divisors, whose sum is σ = 28948550712. Its totient is φ = 28948550710.

The previous prime is 28948550669. The next prime is 28948550747. The reversal of 28948550711 is 11705584982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28948550711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28948550711.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28948550791) 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, 14474275355 + 14474275356.

It is an arithmetic number, because the mean of its divisors is an integer number (14474275356).

Almost surely, 2^28948550711 is an apocalyptic number.

28948550711 is a deficient number, since it is larger than the sum of its proper divisors (1).

28948550711 is an equidigital number, since it uses as much as digits as its factorization.

28948550711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 806400, while the sum is 50.

The spelling of 28948550711 in words is "twenty-eight billion, nine hundred forty-eight million, five hundred fifty thousand, seven hundred eleven".