9665149068 has 96 divisors (see below), whose sum is σ = 25418373120. Its totient is φ = 3215216592.

The previous prime is 9665149051. The next prime is 9665149069. The reversal of 9665149068 is 8609415669.

It is a happy number.

9665149068 is a `hidden beast` number, since 9 + 66 + 514 + 9 + 0 + 68 = 666.

It is a super-2 number, since 2×9665149068² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (9665149069) 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, 6499021 + ... + 6500507.

It is an arithmetic number, because the mean of its divisors is an integer number (264774720).

Almost surely, 2^9665149068 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 9665149068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12709186560).

9665149068 is an abundant number, since it is smaller than the sum of its proper divisors (15753224052).

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

9665149068 is a wasteful number, since it uses less digits than its factorization.

9665149068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255 (or 2235 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 9665149068 is about 98311.4900100695. The cubic root of 9665149068 is about 2130.1140268256.

The spelling of 9665149068 in words is "nine billion, six hundred sixty-five million, one hundred forty-nine thousand, sixty-eight".