129351896522249 has 2 divisors, whose sum is σ = 129351896522250. Its totient is φ = 129351896522248.

The previous prime is 129351896522239. The next prime is 129351896522327. The reversal of 129351896522249 is 942225698153921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93843645667849 + 35508250854400 = 9687293^2 + 5958880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129351896522249 is a prime.

It is a super-2 number, since 2×129351896522249² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (129351896522239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64675948261124 + 64675948261125.

It is an arithmetic number, because the mean of its divisors is an integer number (64675948261125).

Almost surely, 2^{129351896522249} is an apocalyptic number.

It is an amenable number.

129351896522249 is a deficient number, since it is larger than the sum of its proper divisors (1).

129351896522249 is an equidigital number, since it uses as much as digits as its factorization.

129351896522249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 167961600, while the sum is 68.

The spelling of 129351896522249 in words is "one hundred twenty-nine trillion, three hundred fifty-one billion, eight hundred ninety-six million, five hundred twenty-two thousand, two hundred forty-nine".