129807442847 has 2 divisors, whose sum is σ = 129807442848. Its totient is φ = 129807442846.

The previous prime is 129807442837. The next prime is 129807442951. The reversal of 129807442847 is 748244708921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129807442847 - 2⁶ = 129807442783 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129807442792 and 129807442801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129807442837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64903721423 + 64903721424.

It is an arithmetic number, because the mean of its divisors is an integer number (64903721424).

Almost surely, 2^129807442847 is an apocalyptic number.

129807442847 is a deficient number, since it is larger than the sum of its proper divisors (1).

129807442847 is an equidigital number, since it uses as much as digits as its factorization.

129807442847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 129807442847 in words is "one hundred twenty-nine billion, eight hundred seven million, four hundred forty-two thousand, eight hundred forty-seven".