28075105879 has 2 divisors, whose sum is σ = 28075105880. Its totient is φ = 28075105878.

The previous prime is 28075105867. The next prime is 28075105897. The reversal of 28075105879 is 97850157082.

It is a happy number.

Together with next prime (28075105897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28075105879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28075105859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14037552939 + 14037552940.

It is an arithmetic number, because the mean of its divisors is an integer number (14037552940).

Almost surely, 2^28075105879 is an apocalyptic number.

28075105879 is a deficient number, since it is larger than the sum of its proper divisors (1).

28075105879 is an equidigital number, since it uses as much as digits as its factorization.

28075105879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1411200, while the sum is 52.

The spelling of 28075105879 in words is "twenty-eight billion, seventy-five million, one hundred five thousand, eight hundred seventy-nine".