129291767768 has 32 divisors (see below), whose sum is σ = 258953740560. Its totient is φ = 60304742400.

The previous prime is 129291767749. The next prime is 129291767783. The reversal of 129291767768 is 867767192921.

129291767768 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×129291767768² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4191158 + ... + 4221893.

Almost surely, 2^129291767768 is an apocalyptic number.

It is an amenable number.

129291767768 is an abundant number, since it is smaller than the sum of its proper divisors (129661972792).

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

129291767768 is a wasteful number, since it uses less digits than its factorization.

129291767768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8413187 (or 8413183 counting only the distinct ones).

The product of its digits is 32006016, while the sum is 65.

The spelling of 129291767768 in words is "one hundred twenty-nine billion, two hundred ninety-one million, seven hundred sixty-seven thousand, seven hundred sixty-eight".