9861201688 has 16 divisors (see below), whose sum is σ = 19912042080. Its totient is φ = 4551323808.

The previous prime is 9861201671. The next prime is 9861201733. The reversal of 9861201688 is 8861021689.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47409520 + ... + 47409727.

It is an arithmetic number, because the mean of its divisors is an integer number (1244502630).

Almost surely, 2^9861201688 is an apocalyptic number.

It is an amenable number.

9861201688 is an abundant number, since it is smaller than the sum of its proper divisors (10050840392).

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

9861201688 is a wasteful number, since it uses less digits than its factorization.

9861201688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94819266 (or 94819262 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 49.

The square root of 9861201688 is about 99303.5834600142. The cubic root of 9861201688 is about 2144.4204843540.

The spelling of 9861201688 in words is "nine billion, eight hundred sixty-one million, two hundred one thousand, six hundred eighty-eight".