9866689086249 has 48 divisors (see below), whose sum is σ = 14700265482240. Its totient is φ = 6374062836960.

The previous prime is 9866689086227. The next prime is 9866689086277. The reversal of 9866689086249 is 9426809866689.

9866689086249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9866689086249 - 2⁵ = 9866689086217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9866689082249) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 237005374 + ... + 237047000.

It is an arithmetic number, because the mean of its divisors is an integer number (306255530880).

Almost surely, 2^{9866689086249} is an apocalyptic number.

It is an amenable number.

9866689086249 is a deficient number, since it is larger than the sum of its proper divisors (4833576395991).

9866689086249 is a wasteful number, since it uses less digits than its factorization.

9866689086249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48050 (or 48047 counting only the distinct ones).

The product of its (nonzero) digits is 3869835264, while the sum is 81.

The spelling of 9866689086249 in words is "nine trillion, eight hundred sixty-six billion, six hundred eighty-nine million, eighty-six thousand, two hundred forty-nine".