840240221184 has 2112 divisors, whose sum is σ = 3429055795200. Its totient is φ = 203166351360.

The previous prime is 840240221147. The next prime is 840240221209. The reversal of 840240221184 is 481122042048.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 27104523249 + ... + 27104523279.

Almost surely, 2^840240221184 is an apocalyptic number.

840240221184 is a gapful number since it is divisible by the number (84) 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 840240221184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1714527897600).

840240221184 is an abundant number, since it is smaller than the sum of its proper divisors (2588815574016).

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

840240221184 is a wasteful number, since it uses less digits than its factorization.

840240221184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 36.

The spelling of 840240221184 in words is "eight hundred forty billion, two hundred forty million, two hundred twenty-one thousand, one hundred eighty-four".