129439928591 has 2 divisors, whose sum is σ = 129439928592. Its totient is φ = 129439928590.

The previous prime is 129439928573. The next prime is 129439928603. The reversal of 129439928591 is 195829934921.

It is a strong prime.

It is an emirp because it is prime and its reverse (195829934921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129439928591 - 2¹⁰ = 129439927567 is a prime.

It is a super-2 number, since 2×129439928591² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129439228591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64719964295 + 64719964296.

It is an arithmetic number, because the mean of its divisors is an integer number (64719964296).

Almost surely, 2^129439928591 is an apocalyptic number.

129439928591 is a deficient number, since it is larger than the sum of its proper divisors (1).

129439928591 is an equidigital number, since it uses as much as digits as its factorization.

129439928591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12597120, while the sum is 62.

The spelling of 129439928591 in words is "one hundred twenty-nine billion, four hundred thirty-nine million, nine hundred twenty-eight thousand, five hundred ninety-one".