129318970650880 has 144 divisors (see below), whose sum is σ = 313967264909760. Its totient is φ = 51026788327424.

The previous prime is 129318970650839. The next prime is 129318970650917. The reversal of 129318970650880 is 88056079813921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69088614 + ... + 70935706.

It is an arithmetic number, because the mean of its divisors is an integer number (2180328228540).

Almost surely, 2^{129318970650880} is an apocalyptic number.

129318970650880 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 129318970650880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156983632454880).

129318970650880 is an abundant number, since it is smaller than the sum of its proper divisors (184648294258880).

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

129318970650880 is an equidigital number, since it uses as much as digits as its factorization.

129318970650880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847856 (or 1847842 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 67.

The spelling of 129318970650880 in words is "one hundred twenty-nine trillion, three hundred eighteen billion, nine hundred seventy million, six hundred fifty thousand, eight hundred eighty".