9983154937856 has 112 divisors (see below), whose sum is σ = 20112700830144. Its totient is φ = 4954750746624.

The previous prime is 9983154937849. The next prime is 9983154937867. The reversal of 9983154937856 is 6587394513899.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1179062135 + ... + 1179070601.

Almost surely, 2^{9983154937856} 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 9983154937856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10056350415072).

9983154937856 is an abundant number, since it is smaller than the sum of its proper divisors (10129545892288).

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

9983154937856 is an equidigital number, since it uses as much as digits as its factorization.

9983154937856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9539 (or 9515 counting only the distinct ones).

The product of its digits is 1763596800, while the sum is 77.

The spelling of 9983154937856 in words is "nine trillion, nine hundred eighty-three billion, one hundred fifty-four million, nine hundred thirty-seven thousand, eight hundred fifty-six".