129134530512 has 90 divisors (see below), whose sum is σ = 391335646182. Its totient is φ = 39733694208.

The previous prime is 129134530463. The next prime is 129134530513. The reversal of 129134530512 is 215035431921.

It is a happy number.

129134530512 is a `hidden beast` number, since 1 + 2 + 9 + 1 + 345 + 305 + 1 + 2 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 14107738176 + 115026792336 = 118776^2 + 339156^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129134530513) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2628823 + ... + 2677494.

Almost surely, 2^129134530512 is an apocalyptic number.

129134530512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129134530512 is an abundant number, since it is smaller than the sum of its proper divisors (262201115670).

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

129134530512 is a wasteful number, since it uses less digits than its factorization.

129134530512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306357 (or 5306335 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 129134530512 in words is "one hundred twenty-nine billion, one hundred thirty-four million, five hundred thirty thousand, five hundred twelve".