129911240799 has 10 divisors (see below), whose sum is σ = 194064940080. Its totient is φ = 86607493812.

The previous prime is 129911240729. The next prime is 129911240801. The reversal of 129911240799 is 997042119921.

It is not a de Polignac number, because 129911240799 - 2¹² = 129911236703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129911240729) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 801921159 + ... + 801921320.

It is an arithmetic number, because the mean of its divisors is an integer number (19406494008).

Almost surely, 2^129911240799 is an apocalyptic number.

129911240799 is a deficient number, since it is larger than the sum of its proper divisors (64153699281).

129911240799 is an equidigital number, since it uses as much as digits as its factorization.

129911240799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603842491 (or 1603842482 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 54.

The spelling of 129911240799 in words is "one hundred twenty-nine billion, nine hundred eleven million, two hundred forty thousand, seven hundred ninety-nine".