8000821440000 has 800 divisors, whose sum is σ = 29658912734880. Its totient is φ = 2128896000000.

The previous prime is 8000821439999. The next prime is 8000821440011. The reversal of 8000821440000 is 441280008.

It is a tau number, because it is divible by the number of its divisors (800).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6056639340 + ... + 6056640660.

Almost surely, 2^{8000821440000} is an apocalyptic number.

8000821440000 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 8000821440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14829456367440).

8000821440000 is an abundant number, since it is smaller than the sum of its proper divisors (21658091294880).

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

8000821440000 is an equidigital number, since it uses as much as digits as its factorization.

8000821440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069 (or 2032 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The spelling of 8000821440000 in words is "eight trillion, eight hundred twenty-one million, four hundred forty thousand".