129789304320 has 640 divisors, whose sum is σ = 483485054976. Its totient is φ = 29410983936.

The previous prime is 129789304297. The next prime is 129789304331. The reversal of 129789304320 is 23403987921.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 129789304320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 79771347 + ... + 79772973.

Almost surely, 2^129789304320 is an apocalyptic number.

129789304320 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 129789304320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241742527488).

129789304320 is an abundant number, since it is smaller than the sum of its proper divisors (353695750656).

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

129789304320 is a wasteful number, since it uses less digits than its factorization.

129789304320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730 (or 1714 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 129789304320 in words is "one hundred twenty-nine billion, seven hundred eighty-nine million, three hundred four thousand, three hundred twenty".