28030623211 has 2 divisors, whose sum is σ = 28030623212. Its totient is φ = 28030623210.

The previous prime is 28030623167. The next prime is 28030623251. The reversal of 28030623211 is 11232603082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28030623211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28030623211.

It is not a weakly prime, because it can be changed into another prime (28030623251) 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 as a sum of consecutive naturals, namely, 14015311605 + 14015311606.

It is an arithmetic number, because the mean of its divisors is an integer number (14015311606).

Almost surely, 2^28030623211 is an apocalyptic number.

28030623211 is a deficient number, since it is larger than the sum of its proper divisors (1).

28030623211 is an equidigital number, since it uses as much as digits as its factorization.

28030623211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 28030623211 in words is "twenty-eight billion, thirty million, six hundred twenty-three thousand, two hundred eleven".