129332720640 has 176 divisors, whose sum is σ = 415138281408. Its totient is φ = 34365702144.

The previous prime is 129332720617. The next prime is 129332720653. The reversal of 129332720640 is 46027233921.

It is a congruent number.

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, 4332004 + ... + 4361756.

Almost surely, 2^129332720640 is an apocalyptic number.

129332720640 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 129332720640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207569140704).

129332720640 is an abundant number, since it is smaller than the sum of its proper divisors (285805560768).

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

129332720640 is a wasteful number, since it uses less digits than its factorization.

129332720640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30064 (or 30046 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The spelling of 129332720640 in words is "one hundred twenty-nine billion, three hundred thirty-two million, seven hundred twenty thousand, six hundred forty".