129389659504 has 100 divisors (see below), whose sum is σ = 301894020800. Its totient is φ = 53663420160.

The previous prime is 129389659481. The next prime is 129389659517. The reversal of 129389659504 is 405956983921.

It is a super-2 number, since 2×129389659504² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1136572 + ... + 1245220.

It is an arithmetic number, because the mean of its divisors is an integer number (3018940208).

Almost surely, 2^129389659504 is an apocalyptic number.

129389659504 is a gapful number since it is divisible by the number (14) 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 129389659504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150947010400).

129389659504 is an abundant number, since it is smaller than the sum of its proper divisors (172504361296).

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

129389659504 is an equidigital number, since it uses as much as digits as its factorization.

129389659504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108716 (or 108689 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 61.

The spelling of 129389659504 in words is "one hundred twenty-nine billion, three hundred eighty-nine million, six hundred fifty-nine thousand, five hundred four".