129155042329599 has 192 divisors, whose sum is σ = 217630784448000. Its totient is φ = 67139496345600.

The previous prime is 129155042329597. The next prime is 129155042329627. The reversal of 129155042329599 is 995923240551921.

It is a Cunningham number, because it is equal to 11364640²-1.

It is not a de Polignac number, because 129155042329599 - 2¹ = 129155042329597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129155042329597) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4102618939 + ... + 4102650419.

It is an arithmetic number, because the mean of its divisors is an integer number (1133493669000).

Almost surely, 2^{129155042329599} is an apocalyptic number.

129155042329599 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

129155042329599 is a deficient number, since it is larger than the sum of its proper divisors (88475742118401).

129155042329599 is a wasteful number, since it uses less digits than its factorization.

129155042329599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32054 (or 32035 counting only the distinct ones).

The product of its (nonzero) digits is 78732000, while the sum is 66.

The spelling of 129155042329599 in words is "one hundred twenty-nine trillion, one hundred fifty-five billion, forty-two million, three hundred twenty-nine thousand, five hundred ninety-nine".