9886864980888 has 144 divisors (see below), whose sum is σ = 31168743376680. Its totient is φ = 2822998058496.

The previous prime is 9886864980871. The next prime is 9886864980911. The reversal of 9886864980888 is 8880894686889.

It is a junction number, because it is equal to n+sod(n) for n = 9886864980798 and 9886864980807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4576731 + ... + 6381237.

Almost surely, 2^{9886864980888} is an apocalyptic number.

9886864980888 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9886864980888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15584371688340).

9886864980888 is an abundant number, since it is smaller than the sum of its proper divisors (21281878395792).

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

9886864980888 is a wasteful number, since it uses less digits than its factorization.

9886864980888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806086 (or 1806072 counting only the distinct ones).

The product of its (nonzero) digits is 24461180928, while the sum is 90.

The spelling of 9886864980888 in words is "nine trillion, eight hundred eighty-six billion, eight hundred sixty-four million, nine hundred eighty thousand, eight hundred eighty-eight".