9601729509 has 32 divisors (see below), whose sum is σ = 13341081600. Its totient is φ = 6135192000.

The previous prime is 9601729469. The next prime is 9601729537. The reversal of 9601729509 is 9059271069.

It is not a de Polignac number, because 9601729509 - 2⁸ = 9601729253 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9601729609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12784884 + ... + 12785634.

It is an arithmetic number, because the mean of its divisors is an integer number (416908800).

Almost surely, 2^9601729509 is an apocalyptic number.

It is an amenable number.

9601729509 is a deficient number, since it is larger than the sum of its proper divisors (3739352091).

9601729509 is a wasteful number, since it uses less digits than its factorization.

9601729509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665.

The product of its (nonzero) digits is 306180, while the sum is 48.

The square root of 9601729509 is about 97988.4151775096. The cubic root of 9601729509 is about 2125.4447610875. Note that the first 3 decimals are identical.

The spelling of 9601729509 in words is "nine billion, six hundred one million, seven hundred twenty-nine thousand, five hundred nine".