9128129973 has 8 divisors (see below), whose sum is σ = 12172980000. Its totient is φ = 6084349968.

The previous prime is 9128129909. The next prime is 9128130007. The reversal of 9128129973 is 3799218219.

9128129973 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9128129973 - 2⁶ = 9128129909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9128129573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247383 + ... + 281876.

It is an arithmetic number, because the mean of its divisors is an integer number (1521622500).

Almost surely, 2^9128129973 is an apocalyptic number.

It is an amenable number.

9128129973 is a deficient number, since it is larger than the sum of its proper divisors (3044850027).

9128129973 is a wasteful number, since it uses less digits than its factorization.

9128129973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535011.

The product of its digits is 489888, while the sum is 51.

The square root of 9128129973 is about 95541.2474955189. The cubic root of 9128129973 is about 2089.9084972493.

The spelling of 9128129973 in words is "nine billion, one hundred twenty-eight million, one hundred twenty-nine thousand, nine hundred seventy-three".