129995238750 has 320 divisors, whose sum is σ = 372626521344. Its totient is φ = 29940480000.

The previous prime is 129995238691. The next prime is 129995238817. The reversal of 129995238750 is 57832599921.

129995238750 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 188125905 + ... + 188126595.

Almost surely, 2^129995238750 is an apocalyptic number.

129995238750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129995238750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186313260672).

129995238750 is an abundant number, since it is smaller than the sum of its proper divisors (242631282594).

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

129995238750 is a wasteful number, since it uses less digits than its factorization.

129995238750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 60.

The spelling of 129995238750 in words is "one hundred twenty-nine billion, nine hundred ninety-five million, two hundred thirty-eight thousand, seven hundred fifty".