9664478316 has 36 divisors (see below), whose sum is σ = 24704152200. Its totient is φ = 3185295168.

The previous prime is 9664478311. The next prime is 9664478347. The reversal of 9664478316 is 6138744669.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×9664478316² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9664478311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1504986 + ... + 1511393.

It is an arithmetic number, because the mean of its divisors is an integer number (686226450).

Almost surely, 2^9664478316 is an apocalyptic number.

It is an amenable number.

9664478316 is an abundant number, since it is smaller than the sum of its proper divisors (15039673884).

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

9664478316 is a wasteful number, since it uses less digits than its factorization.

9664478316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016478 (or 3016473 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 9664478316 is about 98308.0785897070. The cubic root of 9664478316 is about 2130.0647497344.

The spelling of 9664478316 in words is "nine billion, six hundred sixty-four million, four hundred seventy-eight thousand, three hundred sixteen".