9665158272 has 320 divisors, whose sum is σ = 32707164960. Its totient is φ = 2507796480.

The previous prime is 9665158267. The next prime is 9665158273. The reversal of 9665158272 is 2728515669.

It is not an unprimeable number, because it can be changed into a prime (9665158273) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10141348 + ... + 10142300.

Almost surely, 2^9665158272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9665158272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16353582480).

9665158272 is an abundant number, since it is smaller than the sum of its proper divisors (23042006688).

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

9665158272 is an equidigital number, since it uses as much as digits as its factorization.

9665158272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009 (or 976 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 51.

The square root of 9665158272 is about 98311.5368204566. The cubic root of 9665158272 is about 2130.1147029856.

The spelling of 9665158272 in words is "nine billion, six hundred sixty-five million, one hundred fifty-eight thousand, two hundred seventy-two".