129011774993 has 2 divisors, whose sum is σ = 129011774994. Its totient is φ = 129011774992.

The previous prime is 129011774987. The next prime is 129011775043. The reversal of 129011774993 is 399477110921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108508971649 + 20502803344 = 329407^2 + 143188^2 .

It is a cyclic number.

It is not a de Polignac number, because 129011774993 - 2⁴ = 129011774977 is a prime.

It is not a weakly prime, because it can be changed into another prime (129011774933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64505887496 + 64505887497.

It is an arithmetic number, because the mean of its divisors is an integer number (64505887497).

Almost surely, 2^129011774993 is an apocalyptic number.

It is an amenable number.

129011774993 is a deficient number, since it is larger than the sum of its proper divisors (1).

129011774993 is an equidigital number, since it uses as much as digits as its factorization.

129011774993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 53.

The spelling of 129011774993 in words is "one hundred twenty-nine billion, eleven million, seven hundred seventy-four thousand, nine hundred ninety-three".