9616321540 has 36 divisors (see below), whose sum is σ = 23491302156. Its totient is φ = 3297024192.

The previous prime is 9616321513. The next prime is 9616321543. The reversal of 9616321540 is 451236169.

It can be written as a sum of positive squares in 2 ways, for example, as 1253584836 + 8362736704 = 35406^2 + 91448^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9616321540.

It is not an unprimeable number, because it can be changed into a prime (9616321543) 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, 4905307 + ... + 4907266.

It is an arithmetic number, because the mean of its divisors is an integer number (652536171).

Almost surely, 2^9616321540 is an apocalyptic number.

It is an amenable number.

9616321540 is an abundant number, since it is smaller than the sum of its proper divisors (13874980616).

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

9616321540 is a wasteful number, since it uses less digits than its factorization.

9616321540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9812596 (or 9812587 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 9616321540 is about 98062.8448496167. The cubic root of 9616321540 is about 2126.5209164413.

The spelling of 9616321540 in words is "nine billion, six hundred sixteen million, three hundred twenty-one thousand, five hundred forty".