9559728640 has 160 divisors (see below), whose sum is σ = 28577349504. Its totient is φ = 2979594240.

The previous prime is 9559728593. The next prime is 9559728649. The reversal of 9559728640 is 468279559.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (9559728649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172872 + ... + 221368.

Almost surely, 2^9559728640 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 9559728640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14288674752).

9559728640 is an abundant number, since it is smaller than the sum of its proper divisors (19017620864).

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

9559728640 is a wasteful number, since it uses less digits than its factorization.

9559728640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48538 (or 48522 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 55.

The square root of 9559728640 is about 97773.8648105924. The cubic root of 9559728640 is about 2122.3411185069.

The spelling of 9559728640 in words is "nine billion, five hundred fifty-nine million, seven hundred twenty-eight thousand, six hundred forty".