9871983392256 has 100 divisors (see below), whose sum is σ = 29465271155892. Its totient is φ = 3290661116928.

The previous prime is 9871983392251. The next prime is 9871983392351. The reversal of 9871983392256 is 6522933891789.

9871983392256 is a `hidden beast` number, since 9 + 87 + 198 + 339 + 2 + 25 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9871983392251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 118978390 + ... + 119061333.

Almost surely, 2^{9871983392256} is an apocalyptic number.

9871983392256 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

9871983392256 is an abundant number, since it is smaller than the sum of its proper divisors (19593287763636).

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

9871983392256 is an equidigital number, since it uses as much as digits as its factorization.

9871983392256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238039753 (or 238039728 counting only the distinct ones).

The product of its digits is 352719360, while the sum is 72.

The spelling of 9871983392256 in words is "nine trillion, eight hundred seventy-one billion, nine hundred eighty-three million, three hundred ninety-two thousand, two hundred fifty-six".