129992772000 has 576 divisors, whose sum is σ = 527068249344. Its totient is φ = 27424051200.

The previous prime is 129992771981. The next prime is 129992772001. The reversal of 129992772000 is 277299921.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (129992772001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14191422 + ... + 14200578.

It is an arithmetic number, because the mean of its divisors is an integer number (915049044).

Almost surely, 2^129992772000 is an apocalyptic number.

129992772000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129992772000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263534124672).

129992772000 is an abundant number, since it is smaller than the sum of its proper divisors (397075477344).

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

129992772000 is a wasteful number, since it uses less digits than its factorization.

129992772000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9218 (or 9187 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 48.

The spelling of 129992772000 in words is "one hundred twenty-nine billion, nine hundred ninety-two million, seven hundred seventy-two thousand".