9867620085712 has 20 divisors (see below), whose sum is σ = 20243132382276. Its totient is φ = 4643585922560.

The previous prime is 9867620085611. The next prime is 9867620085859. The reversal of 9867620085712 is 2175800267689.

It can be written as a sum of positive squares in 2 ways, for example, as 6762891509136 + 3104728576576 = 2600556^2 + 1762024^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18139007239 + ... + 18139007782.

Almost surely, 2^{9867620085712} is an apocalyptic number.

It is an amenable number.

9867620085712 is an abundant number, since it is smaller than the sum of its proper divisors (10375512296564).

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

9867620085712 is a wasteful number, since it uses less digits than its factorization.

9867620085712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36278015046 (or 36278015040 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 9867620085712 in words is "nine trillion, eight hundred sixty-seven billion, six hundred twenty million, eighty-five thousand, seven hundred twelve".