840044880000 has 240 divisors, whose sum is σ = 3020681470950. Its totient is φ = 224011776000.

The previous prime is 840044879911. The next prime is 840044880043. The reversal of 840044880000 is 88440048.

It can be written as a sum of positive squares in 5 ways, for example, as 60977388096 + 779067491904 = 246936^2 + 882648^2 .

It is a tau number, because it is divible by the number of its divisors (240).

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

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 136636 + ... + 1303364.

Almost surely, 2^840044880000 is an apocalyptic number.

840044880000 is a gapful number since it is divisible by the number (80) 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 840044880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1510340735475).

840044880000 is an abundant number, since it is smaller than the sum of its proper divisors (2180636590950).

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

840044880000 is a wasteful number, since it uses less digits than its factorization.

840044880000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166769 (or 1166739 counting only the distinct ones).

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

The spelling of 840044880000 in words is "eight hundred forty billion, forty-four million, eight hundred eighty thousand".