28894026966149 has 2 divisors, whose sum is σ = 28894026966150. Its totient is φ = 28894026966148.

The previous prime is 28894026966073. The next prime is 28894026966151. The reversal of 28894026966149 is 94166962049882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26622947826049 + 2271079140100 = 5159743^2 + 1507010^2 .

It is a cyclic number.

It is not a de Polignac number, because 28894026966149 - 2³⁶ = 28825307489413 is a prime.

Together with 28894026966151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28894026966169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14447013483074 + 14447013483075.

It is an arithmetic number, because the mean of its divisors is an integer number (14447013483075).

Almost surely, 2^{28894026966149} is an apocalyptic number.

It is an amenable number.

28894026966149 is a deficient number, since it is larger than the sum of its proper divisors (1).

28894026966149 is an equidigital number, since it uses as much as digits as its factorization.

28894026966149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 644972544, while the sum is 74.

The spelling of 28894026966149 in words is "twenty-eight trillion, eight hundred ninety-four billion, twenty-six million, nine hundred sixty-six thousand, one hundred forty-nine".