28105119149 has 2 divisors, whose sum is σ = 28105119150. Its totient is φ = 28105119148.

The previous prime is 28105119139. The next prime is 28105119221. The reversal of 28105119149 is 94191150182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22593096100 + 5512023049 = 150310^2 + 74243^2 .

It is a cyclic number.

It is not a de Polignac number, because 28105119149 - 2²⁰ = 28104070573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28105119139) 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, 14052559574 + 14052559575.

It is an arithmetic number, because the mean of its divisors is an integer number (14052559575).

Almost surely, 2^28105119149 is an apocalyptic number.

It is an amenable number.

28105119149 is a deficient number, since it is larger than the sum of its proper divisors (1).

28105119149 is an equidigital number, since it uses as much as digits as its factorization.

28105119149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 41.

The spelling of 28105119149 in words is "twenty-eight billion, one hundred five million, one hundred nineteen thousand, one hundred forty-nine".