28075105867 has 2 divisors, whose sum is σ = 28075105868. Its totient is φ = 28075105866.

The previous prime is 28075105859. The next prime is 28075105879. The reversal of 28075105867 is 76850157082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28075105867 - 2³ = 28075105859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28075105867.

It is not a weakly prime, because it can be changed into another prime (28075105837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14037552933 + 14037552934.

It is an arithmetic number, because the mean of its divisors is an integer number (14037552934).

Almost surely, 2^28075105867 is an apocalyptic number.

28075105867 is a deficient number, since it is larger than the sum of its proper divisors (1).

28075105867 is an equidigital number, since it uses as much as digits as its factorization.

28075105867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 940800, while the sum is 49.

The spelling of 28075105867 in words is "twenty-eight billion, seventy-five million, one hundred five thousand, eight hundred sixty-seven".