Base | Representation |
---|---|
bin | 100101011110000011… |
… | …0010011111001001001 |
3 | 21200200202102210010100 |
4 | 1022330012103321021 |
5 | 2304243041313111 |
6 | 100544252040013 |
7 | 5546000523111 |
oct | 1127406237111 |
9 | 250622383110 |
10 | 80465182281 |
11 | 31141552450 |
12 | 13717763009 |
13 | 77846190c3 |
14 | 3c7486a041 |
15 | 215e25a756 |
hex | 12bc193e49 |
80465182281 has 12 divisors (see below), whose sum is σ = 126793620720. Its totient is φ = 48766777080.
The previous prime is 80465182277. The next prime is 80465182321. The reversal of 80465182281 is 18228156408.
80465182281 is a `hidden beast` number, since 8 + 0 + 465 + 182 + 2 + 8 + 1 = 666.
It is not a de Polignac number, because 80465182281 - 22 = 80465182277 is a prime.
It is a super-2 number, since 2×804651822812 (a number of 23 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (80465182181) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 406389711 + ... + 406389908.
It is an arithmetic number, because the mean of its divisors is an integer number (10566135060).
Almost surely, 280465182281 is an apocalyptic number.
It is an amenable number.
80465182281 is a deficient number, since it is larger than the sum of its proper divisors (46328438439).
80465182281 is a wasteful number, since it uses less digits than its factorization.
80465182281 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 812779636 (or 812779633 counting only the distinct ones).
The product of its (nonzero) digits is 245760, while the sum is 45.
The spelling of 80465182281 in words is "eighty billion, four hundred sixty-five million, one hundred eighty-two thousand, two hundred eighty-one".
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