9987321360 has 40 divisors (see below), whose sum is σ = 30960696960. Its totient is φ = 2663285632.

The previous prime is 9987321343. The next prime is 9987321361. The reversal of 9987321360 is 631237899.

It is a tau number, because it is divible by the number of its divisors (40).

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 (9987321361) 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, 20806680 + ... + 20807159.

It is an arithmetic number, because the mean of its divisors is an integer number (774017424).

Almost surely, 2^9987321360 is an apocalyptic number.

It is an amenable number.

9987321360 is an abundant number, since it is smaller than the sum of its proper divisors (20973375600).

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

9987321360 is a wasteful number, since it uses less digits than its factorization.

9987321360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41613855 (or 41613849 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 9987321360 is about 99936.5866937630. The cubic root of 9987321360 is about 2153.5237948984.

The spelling of 9987321360 in words is "nine billion, nine hundred eighty-seven million, three hundred twenty-one thousand, three hundred sixty".