129111343734 has 16 divisors (see below), whose sum is σ = 258941975040. Its totient is φ = 42917233320.

The previous prime is 129111343693. The next prime is 129111343763. The reversal of 129111343734 is 437343111921.

129111343734 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 129111343692 and 129111343701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29967982 + ... + 29972289.

It is an arithmetic number, because the mean of its divisors is an integer number (16183873440).

Almost surely, 2^129111343734 is an apocalyptic number.

129111343734 is an abundant number, since it is smaller than the sum of its proper divisors (129830631306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129111343734 is a wasteful number, since it uses less digits than its factorization.

129111343734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59940635.

The product of its digits is 54432, while the sum is 39.

The spelling of 129111343734 in words is "one hundred twenty-nine billion, one hundred eleven million, three hundred forty-three thousand, seven hundred thirty-four".