129136656216 has 32 divisors (see below), whose sum is σ = 322876560240. Its totient is φ = 43040896128.

The previous prime is 129136656169. The next prime is 129136656217. The reversal of 129136656216 is 612656631921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129136656217) by changing a digit.

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, 60771 + ... + 511826.

Almost surely, 2^129136656216 is an apocalyptic number.

It is an amenable number.

129136656216 is an abundant number, since it is smaller than the sum of its proper divisors (193739904024).

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

129136656216 is a wasteful number, since it uses less digits than its factorization.

129136656216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582003 (or 581999 counting only the distinct ones).

The product of its digits is 699840, while the sum is 48.

The spelling of 129136656216 in words is "one hundred twenty-nine billion, one hundred thirty-six million, six hundred fifty-six thousand, two hundred sixteen".