9987243288704 has 64 divisors (see below), whose sum is σ = 22847611053600. Its totient is φ = 4300726763520.

The previous prime is 9987243288691. The next prime is 9987243288707. The reversal of 9987243288704 is 4078823427899.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (9987243288707) 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, 186636737 + ... + 186690240.

Almost surely, 2^{9987243288704} is an apocalyptic number.

It is an amenable number.

9987243288704 is an abundant number, since it is smaller than the sum of its proper divisors (12860367764896).

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

9987243288704 is a wasteful number, since it uses less digits than its factorization.

9987243288704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373327021 (or 373327009 counting only the distinct ones).

The product of its (nonzero) digits is 390168576, while the sum is 71.

The spelling of 9987243288704 in words is "nine trillion, nine hundred eighty-seven billion, two hundred forty-three million, two hundred eighty-eight thousand, seven hundred four".