129509244708 has 24 divisors (see below), whose sum is σ = 303753985248. Its totient is φ = 42946070016.

The previous prime is 129509244677. The next prime is 129509244749. The reversal of 129509244708 is 807442905921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27957366 + ... + 27961997.

It is an arithmetic number, because the mean of its divisors is an integer number (12656416052).

Almost surely, 2^129509244708 is an apocalyptic number.

It is an amenable number.

129509244708 is an abundant number, since it is smaller than the sum of its proper divisors (174244740540).

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

129509244708 is a wasteful number, since it uses less digits than its factorization.

129509244708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55919563 (or 55919561 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 129509244708 in words is "one hundred twenty-nine billion, five hundred nine million, two hundred forty-four thousand, seven hundred eight".