9665781024 has 48 divisors (see below), whose sum is σ = 25572492288. Its totient is φ = 3196553472.

The previous prime is 9665781011. The next prime is 9665781029. The reversal of 9665781024 is 4201875669.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (9665781029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384207 + ... + 408590.

It is an arithmetic number, because the mean of its divisors is an integer number (532760256).

Almost surely, 2^9665781024 is an apocalyptic number.

It is an amenable number.

9665781024 is an abundant number, since it is smaller than the sum of its proper divisors (15906711264).

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

9665781024 is a wasteful number, since it uses less digits than its factorization.

9665781024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792937 (or 792929 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 9665781024 is about 98314.7040070813. The cubic root of 9665781024 is about 2130.1604516657.

The spelling of 9665781024 in words is "nine billion, six hundred sixty-five million, seven hundred eighty-one thousand, twenty-four".