28943704129 has 2 divisors, whose sum is σ = 28943704130. Its totient is φ = 28943704128.

The previous prime is 28943704099. The next prime is 28943704199. The reversal of 28943704129 is 92140734982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28721097729 + 222606400 = 169473^2 + 14920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28943704129 is a prime.

It is not a weakly prime, because it can be changed into another prime (28943704199) 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, 14471852064 + 14471852065.

It is an arithmetic number, because the mean of its divisors is an integer number (14471852065).

Almost surely, 2^28943704129 is an apocalyptic number.

It is an amenable number.

28943704129 is a deficient number, since it is larger than the sum of its proper divisors (1).

28943704129 is an equidigital number, since it uses as much as digits as its factorization.

28943704129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 28943704129 in words is "twenty-eight billion, nine hundred forty-three million, seven hundred four thousand, one hundred twenty-nine".