129718247047 has 2 divisors, whose sum is σ = 129718247048. Its totient is φ = 129718247046.

The previous prime is 129718247027. The next prime is 129718247051. The reversal of 129718247047 is 740742817921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129718247047 - 2⁷ = 129718246919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129718246985 and 129718247003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129718247027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64859123523 + 64859123524.

It is an arithmetic number, because the mean of its divisors is an integer number (64859123524).

Almost surely, 2^129718247047 is an apocalyptic number.

129718247047 is a deficient number, since it is larger than the sum of its proper divisors (1).

129718247047 is an equidigital number, since it uses as much as digits as its factorization.

129718247047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1580544, while the sum is 52.

The spelling of 129718247047 in words is "one hundred twenty-nine billion, seven hundred eighteen million, two hundred forty-seven thousand, forty-seven".