80000500000 has 84 divisors (see below), whose sum is σ = 196874940906. Its totient is φ = 32000000000.

The previous prime is 80000499973. The next prime is 80000500001. The reversal of 80000500000 is 500008.

It can be written as a sum of positive squares in 7 ways, for example, as 13793093136 + 66207406864 = 117444^2 + 257308^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80000500001) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 420000 + ... + 580000.

Almost surely, 2^80000500000 is an apocalyptic number.

80000500000 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 80000500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98437470453).

80000500000 is an abundant number, since it is smaller than the sum of its proper divisors (116874440906).

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

80000500000 is an frugal number, since it uses more digits than its factorization.

80000500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160041 (or 160008 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

It can be divided in two parts, 80000 and 500000, that multiplied together give a square (40000000000 = 200000²).

The spelling of 80000500000 in words is "eighty billion, five hundred thousand".