840089735472 has 160 divisors (see below), whose sum is σ = 2441243750400. Its totient is φ = 247152116736.

The previous prime is 840089735467. The next prime is 840089735491. The reversal of 840089735472 is 274537980048.

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 31 ways as a sum of consecutive naturals, for example, 1638529 + ... + 2089247.

It is an arithmetic number, because the mean of its divisors is an integer number (15257773440).

Almost surely, 2^840089735472 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 840089735472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1220621875200).

840089735472 is an abundant number, since it is smaller than the sum of its proper divisors (1601154014928).

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

840089735472 is a wasteful number, since it uses less digits than its factorization.

840089735472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450875 (or 450869 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 57.

The spelling of 840089735472 in words is "eight hundred forty billion, eighty-nine million, seven hundred thirty-five thousand, four hundred seventy-two".