129992909184 has 96 divisors (see below), whose sum is σ = 383722194600. Its totient is φ = 43323904512.

The previous prime is 129992909183. The next prime is 129992909209. The reversal of 129992909184 is 481909299921.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129992909183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21192582 + ... + 21198714.

Almost surely, 2^129992909184 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129992909184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191861097300).

129992909184 is an abundant number, since it is smaller than the sum of its proper divisors (253729285416).

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

129992909184 is an frugal number, since it uses more digits than its factorization.

129992909184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12289 (or 6138 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 63.

The spelling of 129992909184 in words is "one hundred twenty-nine billion, nine hundred ninety-two million, nine hundred nine thousand, one hundred eighty-four".