129729992580 has 192 divisors, whose sum is σ = 435676147200. Its totient is φ = 31949406720.

The previous prime is 129729992549. The next prime is 129729992617. The reversal of 129729992580 is 85299927921.

129729992580 is a `hidden beast` number, since 1 + 2 + 97 + 299 + 9 + 258 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 180090 + ... + 540270.

It is an arithmetic number, because the mean of its divisors is an integer number (2269146600).

Almost surely, 2^129729992580 is an apocalyptic number.

129729992580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 360180×360181.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129729992580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217838073600).

129729992580 is an abundant number, since it is smaller than the sum of its proper divisors (305946154620).

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

129729992580 is a wasteful number, since it uses less digits than its factorization.

129729992580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360251 (or 360243 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 63.

The spelling of 129729992580 in words is "one hundred twenty-nine billion, seven hundred twenty-nine million, nine hundred ninety-two thousand, five hundred eighty".