129284887937 has 2 divisors, whose sum is σ = 129284887938. Its totient is φ = 129284887936.

The previous prime is 129284887903. The next prime is 129284888011. The reversal of 129284887937 is 739788482921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84559405681 + 44725482256 = 290791^2 + 211484^2 .

It is an emirp because it is prime and its reverse (739788482921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129284887937 - 2¹⁴ = 129284871553 is a prime.

It is not a weakly prime, because it can be changed into another prime (129284880937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64642443968 + 64642443969.

It is an arithmetic number, because the mean of its divisors is an integer number (64642443969).

Almost surely, 2^129284887937 is an apocalyptic number.

It is an amenable number.

129284887937 is a deficient number, since it is larger than the sum of its proper divisors (1).

129284887937 is an equidigital number, since it uses as much as digits as its factorization.

129284887937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97542144, while the sum is 68.

The spelling of 129284887937 in words is "one hundred twenty-nine billion, two hundred eighty-four million, eight hundred eighty-seven thousand, nine hundred thirty-seven".