28122917843 has 2 divisors, whose sum is σ = 28122917844. Its totient is φ = 28122917842.

The previous prime is 28122917833. The next prime is 28122917873. The reversal of 28122917843 is 34871922182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28122917843 - 2¹⁰ = 28122916819 is a prime.

It is not a weakly prime, because it can be changed into another prime (28122917803) 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, 14061458921 + 14061458922.

It is an arithmetic number, because the mean of its divisors is an integer number (14061458922).

Almost surely, 2^28122917843 is an apocalyptic number.

28122917843 is a deficient number, since it is larger than the sum of its proper divisors (1).

28122917843 is an equidigital number, since it uses as much as digits as its factorization.

28122917843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 47.

The spelling of 28122917843 in words is "twenty-eight billion, one hundred twenty-two million, nine hundred seventeen thousand, eight hundred forty-three".