Base | Representation |
---|---|
bin | 1001101000011… |
… | …10110011110011 |
3 | 12122001010011001 |
4 | 10310032303303 |
5 | 131141113021 |
6 | 12003502431 |
7 | 2000540314 |
oct | 464166363 |
9 | 178033131 |
10 | 80801011 |
11 | 41678aa5 |
12 | 23087a17 |
13 | 13980b65 |
14 | aa3460b |
15 | 7161091 |
hex | 4d0ecf3 |
80801011 has 2 divisors, whose sum is σ = 80801012. Its totient is φ = 80801010.
The previous prime is 80801009. The next prime is 80801033. The reversal of 80801011 is 11010808.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 80801011 - 21 = 80801009 is a prime.
Together with 80801009, it forms a pair of twin primes.
It is a self number, because there is not a number n which added to its sum of digits gives 80801011.
It is not a weakly prime, because it can be changed into another prime (80801041) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40400505 + 40400506.
It is an arithmetic number, because the mean of its divisors is an integer number (40400506).
Almost surely, 280801011 is an apocalyptic number.
80801011 is a deficient number, since it is larger than the sum of its proper divisors (1).
80801011 is an equidigital number, since it uses as much as digits as its factorization.
80801011 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 64, while the sum is 19.
The square root of 80801011 is about 8988.9382576587. The cubic root of 80801011 is about 432.3202696919.
Adding to 80801011 its reverse (11010808), we get a palindrome (91811819).
The spelling of 80801011 in words is "eighty million, eight hundred one thousand, eleven".
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