129738112308 has 144 divisors (see below), whose sum is σ = 377948712960. Its totient is φ = 36757611072.

The previous prime is 129738112303. The next prime is 129738112313. The reversal of 129738112308 is 803211837921.

It is an interprime number because it is at equal distance from previous prime (129738112303) and next prime (129738112313).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129738112303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18639733 + ... + 18646691.

It is an arithmetic number, because the mean of its divisors is an integer number (2624643840).

Almost surely, 2^129738112308 is an apocalyptic number.

129738112308 is a gapful number since it is divisible by the number (18) 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 129738112308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188974356480).

129738112308 is an abundant number, since it is smaller than the sum of its proper divisors (248210600652).

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

129738112308 is a wasteful number, since it uses less digits than its factorization.

129738112308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7586 (or 7581 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 129738112308 in words is "one hundred twenty-nine billion, seven hundred thirty-eight million, one hundred twelve thousand, three hundred eight".