129515752050 has 96 divisors (see below), whose sum is σ = 345668840064. Its totient is φ = 31972992000.

The previous prime is 129515752039. The next prime is 129515752057. The reversal of 129515752050 is 50257515921.

129515752050 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 129515751993 and 129515752011.

It is not an unprimeable number, because it can be changed into a prime (129515752057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 260766 + ... + 571865.

It is an arithmetic number, because the mean of its divisors is an integer number (3600717084).

Almost surely, 2^129515752050 is an apocalyptic number.

129515752050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129515752050 is an abundant number, since it is smaller than the sum of its proper divisors (216153088014).

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

129515752050 is a wasteful number, since it uses less digits than its factorization.

129515752050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832724 (or 832719 counting only the distinct ones).

The product of its (nonzero) digits is 157500, while the sum is 42.

The spelling of 129515752050 in words is "one hundred twenty-nine billion, five hundred fifteen million, seven hundred fifty-two thousand, fifty".