800000000000 has 180 divisors, whose sum is σ = 1999938956652. Its totient is φ = 320000000000.

The previous prime is 799999999991. The next prime is 800000000047. The reversal of 800000000000 is 8.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 114363006976 + 685636993024 = 338176^2 + 828032^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 799999999897 and 799999999906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159999999998 + ... + 160000000002.

Almost surely, 2^800000000000 is an apocalyptic number.

800000000000 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 800000000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (999969478326).

800000000000 is an abundant number, since it is smaller than the sum of its proper divisors (1199938956652).

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

800000000000 is an frugal number, since it uses more digits than its factorization.

800000000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 7 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The spelling of 800000000000 in words is "eight hundred billion", and thus it is an aban number.