9129807139908 has 144 divisors (see below), whose sum is σ = 26782106851584. Its totient is φ = 2399291758080.

The previous prime is 9129807139897. The next prime is 9129807139939. The reversal of 9129807139908 is 8099317089219.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22741 + ... + 4273187.

It is an arithmetic number, because the mean of its divisors is an integer number (185986853136).

Almost surely, 2^{9129807139908} is an apocalyptic number.

9129807139908 is a gapful number since it is divisible by the number (98) 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 9129807139908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13391053425792).

9129807139908 is an abundant number, since it is smaller than the sum of its proper divisors (17652299711676).

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

9129807139908 is a wasteful number, since it uses less digits than its factorization.

9129807139908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250762 (or 4250753 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 66.

The spelling of 9129807139908 in words is "nine trillion, one hundred twenty-nine billion, eight hundred seven million, one hundred thirty-nine thousand, nine hundred eight".