129316415749 has 2 divisors, whose sum is σ = 129316415750. Its totient is φ = 129316415748.

The previous prime is 129316415737. The next prime is 129316415777. The reversal of 129316415749 is 947514613921.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111940430625 + 17375985124 = 334575^2 + 131818^2 .

It is a cyclic number.

It is not a de Polignac number, because 129316415749 - 2⁷ = 129316415621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129316415696 and 129316415705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129316415729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64658207874 + 64658207875.

It is an arithmetic number, because the mean of its divisors is an integer number (64658207875).

Almost surely, 2^129316415749 is an apocalyptic number.

It is an amenable number.

129316415749 is a deficient number, since it is larger than the sum of its proper divisors (1).

129316415749 is an equidigital number, since it uses as much as digits as its factorization.

129316415749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 52.

The spelling of 129316415749 in words is "one hundred twenty-nine billion, three hundred sixteen million, four hundred fifteen thousand, seven hundred forty-nine".