129853764329 has 2 divisors, whose sum is σ = 129853764330. Its totient is φ = 129853764328.

The previous prime is 129853764253. The next prime is 129853764349. The reversal of 129853764329 is 923467358921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123782237929 + 6071526400 = 351827^2 + 77920^2 .

It is a cyclic number.

It is not a de Polignac number, because 129853764329 - 2¹² = 129853760233 is a prime.

It is a super-2 number, since 2×129853764329² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (129853764349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64926882164 + 64926882165.

It is an arithmetic number, because the mean of its divisors is an integer number (64926882165).

Almost surely, 2^129853764329 is an apocalyptic number.

It is an amenable number.

129853764329 is a deficient number, since it is larger than the sum of its proper divisors (1).

129853764329 is an equidigital number, since it uses as much as digits as its factorization.

129853764329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19595520, while the sum is 59.

The spelling of 129853764329 in words is "one hundred twenty-nine billion, eight hundred fifty-three million, seven hundred sixty-four thousand, three hundred twenty-nine".