129028693800 has 192 divisors, whose sum is σ = 408327526080. Its totient is φ = 33696368640.

The previous prime is 129028693757. The next prime is 129028693819. The reversal of 129028693800 is 8396820921.

It is a self number, because there is not a number n which added to its sum of digits gives 129028693800.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 6945324 + ... + 6963876.

It is an arithmetic number, because the mean of its divisors is an integer number (2126705865).

Almost surely, 2^129028693800 is an apocalyptic number.

129028693800 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 129028693800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204163763040).

129028693800 is an abundant number, since it is smaller than the sum of its proper divisors (279298832280).

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

129028693800 is a wasteful number, since it uses less digits than its factorization.

129028693800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18812 (or 18803 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 129028693800 in words is "one hundred twenty-nine billion, twenty-eight million, six hundred ninety-three thousand, eight hundred".