28508846711 has 4 divisors (see below), whose sum is σ = 30185837712. Its totient is φ = 26831855712.

The previous prime is 28508846701. The next prime is 28508846753. The reversal of 28508846711 is 11764880582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28508846711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28508846711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28508846701) 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 in 3 ways as a sum of consecutive naturals, for example, 838495475 + ... + 838495508.

It is an arithmetic number, because the mean of its divisors is an integer number (7546459428).

Almost surely, 2^28508846711 is an apocalyptic number.

28508846711 is a deficient number, since it is larger than the sum of its proper divisors (1676991001).

28508846711 is a wasteful number, since it uses less digits than its factorization.

28508846711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676991000.

The product of its (nonzero) digits is 860160, while the sum is 50.

The spelling of 28508846711 in words is "twenty-eight billion, five hundred eight million, eight hundred forty-six thousand, seven hundred eleven".