129150085568 has 84 divisors (see below), whose sum is σ = 298815843312. Its totient is φ = 55221626880.

The previous prime is 129150085529. The next prime is 129150085591. The reversal of 129150085568 is 865580051921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1310333 + ... + 1405443.

It is an arithmetic number, because the mean of its divisors is an integer number (3557331468).

Almost surely, 2^129150085568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129150085568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149407921656).

129150085568 is an abundant number, since it is smaller than the sum of its proper divisors (169665757744).

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

129150085568 is an equidigital number, since it uses as much as digits as its factorization.

129150085568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95570 (or 95553 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 50.

The spelling of 129150085568 in words is "one hundred twenty-nine billion, one hundred fifty million, eighty-five thousand, five hundred sixty-eight".