Base | Representation |
---|---|
bin | 100101101000111100… |
… | …1011100110001001000 |
3 | 21201122020121122120100 |
4 | 1023101321130301020 |
5 | 2311020203101022 |
6 | 101044434525400 |
7 | 5561031252213 |
oct | 1132171346110 |
9 | 251566548510 |
10 | 80830909512 |
11 | 31309a39761 |
12 | 137ba136860 |
13 | 781231a952 |
14 | 3cab26c77a |
15 | 21813ee1ac |
hex | 12d1e5cc48 |
80830909512 has 48 divisors (see below), whose sum is σ = 224833730940. Its totient is φ = 26215429248.
The previous prime is 80830909507. The next prime is 80830909531. The reversal of 80830909512 is 21590903808.
It is a happy number.
It can be written as a sum of positive squares in 2 ways, for example, as 55203382116 + 25627527396 = 234954^2 + 160086^2 .
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15168303 + ... + 15173630.
Almost surely, 280830909512 is an apocalyptic number.
It is an amenable number.
80830909512 is an abundant number, since it is smaller than the sum of its proper divisors (144002821428).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80830909512 is a wasteful number, since it uses less digits than its factorization.
80830909512 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 30341982 (or 30341975 counting only the distinct ones).
The product of its (nonzero) digits is 155520, while the sum is 45.
The spelling of 80830909512 in words is "eighty billion, eight hundred thirty million, nine hundred nine thousand, five hundred twelve".
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