129748337280 has 192 divisors, whose sum is σ = 448257349800. Its totient is φ = 34582560768.

The previous prime is 129748337273. The next prime is 129748337339. The reversal of 129748337280 is 82733847921.

129748337280 is a `hidden beast` number, since 1 + 2 + 97 + 483 + 3 + 72 + 8 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 42789404736 + 86958932544 = 206856^2 + 294888^2 .

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15484452 + ... + 15492828.

Almost surely, 2^129748337280 is an apocalyptic number.

129748337280 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 129748337280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224128674900).

129748337280 is an abundant number, since it is smaller than the sum of its proper divisors (318509012520).

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

129748337280 is a wasteful number, since it uses less digits than its factorization.

129748337280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11091 (or 11076 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 129748337280 in words is "one hundred twenty-nine billion, seven hundred forty-eight million, three hundred thirty-seven thousand, two hundred eighty".