129233198749 has 2 divisors, whose sum is σ = 129233198750. Its totient is φ = 129233198748.

The previous prime is 129233198729. The next prime is 129233198819. The reversal of 129233198749 is 947891332921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74204484025 + 55028714724 = 272405^2 + 234582^2 .

It is a cyclic number.

It is not a de Polignac number, because 129233198749 - 2³¹ = 127085715101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129233198693 and 129233198702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129233198729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64616599374 + 64616599375.

It is an arithmetic number, because the mean of its divisors is an integer number (64616599375).

Almost surely, 2^129233198749 is an apocalyptic number.

It is an amenable number.

129233198749 is a deficient number, since it is larger than the sum of its proper divisors (1).

129233198749 is an equidigital number, since it uses as much as digits as its factorization.

129233198749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 58.

The spelling of 129233198749 in words is "one hundred twenty-nine billion, two hundred thirty-three million, one hundred ninety-eight thousand, seven hundred forty-nine".