28820759129 has 2 divisors, whose sum is σ = 28820759130. Its totient is φ = 28820759128.

The previous prime is 28820759111. The next prime is 28820759131. The reversal of 28820759129 is 92195702882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28814383504 + 6375625 = 169748^2 + 2525^2 .

It is a cyclic number.

It is not a de Polignac number, because 28820759129 - 2²⁰ = 28819710553 is a prime.

Together with 28820759131, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28820759029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14410379564 + 14410379565.

It is an arithmetic number, because the mean of its divisors is an integer number (14410379565).

Almost surely, 2^28820759129 is an apocalyptic number.

It is an amenable number.

28820759129 is a deficient number, since it is larger than the sum of its proper divisors (1).

28820759129 is an equidigital number, since it uses as much as digits as its factorization.

28820759129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 28820759129 in words is "twenty-eight billion, eight hundred twenty million, seven hundred fifty-nine thousand, one hundred twenty-nine".