129697966273 has 2 divisors, whose sum is σ = 129697966274. Its totient is φ = 129697966272.

The previous prime is 129697966183. The next prime is 129697966289. The reversal of 129697966273 is 372669796921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128315836944 + 1382129329 = 358212^2 + 37177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129697966273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129697966199 and 129697966208.

It is not a weakly prime, because it can be changed into another prime (129697966973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64848983136 + 64848983137.

It is an arithmetic number, because the mean of its divisors is an integer number (64848983137).

Almost surely, 2^129697966273 is an apocalyptic number.

It is an amenable number.

129697966273 is a deficient number, since it is larger than the sum of its proper divisors (1).

129697966273 is an equidigital number, since it uses as much as digits as its factorization.

129697966273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92588832, while the sum is 67.

The spelling of 129697966273 in words is "one hundred twenty-nine billion, six hundred ninety-seven million, nine hundred sixty-six thousand, two hundred seventy-three".