840804800800 has 36 divisors (see below), whose sum is σ = 2052614721906. Its totient is φ = 336321920000.

The previous prime is 840804800791. The next prime is 840804800839. The reversal of 840804800800 is 8008408048.

It can be written as a sum of positive squares in 3 ways, for example, as 531388513296 + 309416287504 = 728964^2 + 556252^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 525502201 + ... + 525503800.

Almost surely, 2^840804800800 is an apocalyptic number.

840804800800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

840804800800 is an abundant number, since it is smaller than the sum of its proper divisors (1211809921106).

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

840804800800 is a wasteful number, since it uses less digits than its factorization.

840804800800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051006021 (or 1051006008 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 40.

The spelling of 840804800800 in words is "eight hundred forty billion, eight hundred four million, eight hundred thousand, eight hundred".