9864109665552 has 80 divisors (see below), whose sum is σ = 26895369786560. Its totient is φ = 3106630734336.

The previous prime is 9864109665541. The next prime is 9864109665587. The reversal of 9864109665552 is 2555669014689.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14158363 + ... + 14838714.

It is an arithmetic number, because the mean of its divisors is an integer number (336192122332).

Almost surely, 2^{9864109665552} is an apocalyptic number.

It is an amenable number.

9864109665552 is an abundant number, since it is smaller than the sum of its proper divisors (17031260121008).

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

9864109665552 is a wasteful number, since it uses less digits than its factorization.

9864109665552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28997480 (or 28997474 counting only the distinct ones).

The product of its (nonzero) digits is 139968000, while the sum is 66.

The spelling of 9864109665552 in words is "nine trillion, eight hundred sixty-four billion, one hundred nine million, six hundred sixty-five thousand, five hundred fifty-two".