8000000080 has 40 divisors (see below), whose sum is σ = 19694121192. Its totient is φ = 3011764224.

The previous prime is 8000000051. The next prime is 8000000081. The reversal of 8000000080 is 800000008.

It can be written as a sum of positive squares in 4 ways, for example, as 2680339984 + 5319660096 = 51772^2 + 72936^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8000000081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2939817 + ... + 2942536.

Almost surely, 2^8000000080 is an apocalyptic number.

8000000080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8000000080 is an abundant number, since it is smaller than the sum of its proper divisors (11694121112).

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

8000000080 is a wasteful number, since it uses less digits than its factorization.

8000000080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882383 (or 5882377 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 8000000080 is about 89442.7195472052. The cubic root of 8000000080 is about 2000.0000066667. Note that the first 5 decimals are identical.

8000000080 divided by its sum of digits (16) gives a palindrome (500000005).

Adding to 8000000080 its reverse (800000008), we get a palindrome (8800000088).

It can be divided in two parts, 80000000 and 80, that multiplied together give a square (6400000000 = 80000²).

The spelling of 8000000080 in words is "eight billion, eighty", and thus it is an aban number and an uban number.