129125352960 has 400 divisors, whose sum is σ = 464477387616. Its totient is φ = 34285289472.

The previous prime is 129125352787. The next prime is 129125352989. The reversal of 129125352960 is 69253521921.

129125352960 is a `hidden beast` number, since 1 + 2 + 9 + 12 + 53 + 529 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 53290309 + ... + 53292731.

Almost surely, 2^129125352960 is an apocalyptic number.

129125352960 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 129125352960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232238693808).

129125352960 is an abundant number, since it is smaller than the sum of its proper divisors (335352034656).

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

129125352960 is an equidigital number, since it uses as much as digits as its factorization.

129125352960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715 (or 2690 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 129125352960 in words is "one hundred twenty-nine billion, one hundred twenty-five million, three hundred fifty-two thousand, nine hundred sixty".