Base | Representation |
---|---|
bin | 100101101000010010… |
… | …1011100101000110000 |
3 | 21201120201011212221101 |
4 | 1023100211130220300 |
5 | 2310444033421010 |
6 | 101042330534144 |
7 | 5560343136136 |
oct | 1132045345060 |
9 | 251521155841 |
10 | 80808888880 |
11 | 312a8569295 |
12 | 137b2897354 |
13 | 780a8aa8a5 |
14 | 3ca8379756 |
15 | 217e4ee73a |
hex | 12d095ca30 |
80808888880 has 20 divisors (see below), whose sum is σ = 187880666832. Its totient is φ = 32323555520.
The previous prime is 80808888829. The next prime is 80808888883. The reversal of 80808888880 is 8888880808.
It is a tau number, because it is divible by the number of its divisors (20).
It is not an unprimeable number, because it can be changed into a prime (80808888883) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505055476 + ... + 505055635.
Almost surely, 280808888880 is an apocalyptic number.
80808888880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
80808888880 is an abundant number, since it is smaller than the sum of its proper divisors (107071777952).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80808888880 is a wasteful number, since it uses less digits than its factorization.
80808888880 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1010111124 (or 1010111118 counting only the distinct ones).
The product of its (nonzero) digits is 16777216, while the sum is 64.
The spelling of 80808888880 in words is "eighty billion, eight hundred eight million, eight hundred eighty-eight thousand, eight hundred eighty".
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