129151612049 has 2 divisors, whose sum is σ = 129151612050. Its totient is φ = 129151612048.

The previous prime is 129151611991. The next prime is 129151612061. The reversal of 129151612049 is 940216151921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126565177600 + 2586434449 = 355760^2 + 50857^2 .

It is a cyclic number.

It is not a de Polignac number, because 129151612049 - 2²⁴ = 129134834833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 129151611997 and 129151612015.

It is not a weakly prime, because it can be changed into another prime (129151612099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64575806024 + 64575806025.

It is an arithmetic number, because the mean of its divisors is an integer number (64575806025).

Almost surely, 2^129151612049 is an apocalyptic number.

It is an amenable number.

129151612049 is a deficient number, since it is larger than the sum of its proper divisors (1).

129151612049 is an equidigital number, since it uses as much as digits as its factorization.

129151612049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 129151612049 in words is "one hundred twenty-nine billion, one hundred fifty-one million, six hundred twelve thousand, forty-nine".