Base | Representation |
---|---|
bin | 100101011100010000… |
… | …1111000011110110001 |
3 | 21200112120202111200101 |
4 | 1022320201320132301 |
5 | 2304132224114134 |
6 | 100534312352401 |
7 | 5544342532444 |
oct | 1127041703661 |
9 | 250476674611 |
10 | 80405301169 |
11 | 31110772926 |
12 | 136bb6a5701 |
13 | 77750b12ab |
14 | 3c6a91d65b |
15 | 2158d7ce14 |
hex | 12b88787b1 |
80405301169 has 2 divisors, whose sum is σ = 80405301170. Its totient is φ = 80405301168.
The previous prime is 80405301167. The next prime is 80405301199. The reversal of 80405301169 is 96110350408.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 77834304144 + 2570997025 = 278988^2 + 50705^2 .
It is a cyclic number.
It is not a de Polignac number, because 80405301169 - 21 = 80405301167 is a prime.
It is a super-2 number, since 2×804053011692 (a number of 23 digits) contains 22 as substring.
Together with 80405301167, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (80405301161) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40202650584 + 40202650585.
It is an arithmetic number, because the mean of its divisors is an integer number (40202650585).
Almost surely, 280405301169 is an apocalyptic number.
It is an amenable number.
80405301169 is a deficient number, since it is larger than the sum of its proper divisors (1).
80405301169 is an equidigital number, since it uses as much as digits as its factorization.
80405301169 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 25920, while the sum is 37.
The spelling of 80405301169 in words is "eighty billion, four hundred five million, three hundred one thousand, one hundred sixty-nine".
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