9891846136860 has 192 divisors, whose sum is σ = 29432950428672. Its totient is φ = 2476989149184.

The previous prime is 9891846136831. The next prime is 9891846136871. The reversal of 9891846136860 is 686316481989.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26908212 + ... + 27273348.

It is an arithmetic number, because the mean of its divisors is an integer number (153296616816).

Almost surely, 2^{9891846136860} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9891846136860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14716475214336).

9891846136860 is an abundant number, since it is smaller than the sum of its proper divisors (19541104291812).

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

9891846136860 is a wasteful number, since it uses less digits than its factorization.

9891846136860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365532 (or 365530 counting only the distinct ones).

The product of its (nonzero) digits is 107495424, while the sum is 69.

The spelling of 9891846136860 in words is "nine trillion, eight hundred ninety-one billion, eight hundred forty-six million, one hundred thirty-six thousand, eight hundred sixty".