Base | Representation |
---|---|
bin | 100101101100001011… |
… | …0000111100001000111 |
3 | 21201220210011200110220 |
4 | 1023120112013201013 |
5 | 2311230401303233 |
6 | 101103301315423 |
7 | 5563513616220 |
oct | 1133026074107 |
9 | 251823150426 |
10 | 80939087943 |
11 | 3136500681a |
12 | 1382a405b73 |
13 | 782b865b5c |
14 | 3cbb78c247 |
15 | 218ab6beb3 |
hex | 12d8587847 |
80939087943 has 32 divisors (see below), whose sum is σ = 131470540800. Its totient is φ = 43261991136.
The previous prime is 80939087927. The next prime is 80939087987. The reversal of 80939087943 is 34978093908.
It is not a de Polignac number, because 80939087943 - 24 = 80939087927 is a prime.
It is a super-2 number, since 2×809390879432 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80939087443) by changing a digit.
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 31 ways as a sum of consecutive naturals, for example, 1252371 + ... + 1315412.
It is an arithmetic number, because the mean of its divisors is an integer number (4108454400).
Almost surely, 280939087943 is an apocalyptic number.
80939087943 is a deficient number, since it is larger than the sum of its proper divisors (50531452857).
80939087943 is a wasteful number, since it uses less digits than its factorization.
80939087943 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2567891.
The product of its (nonzero) digits is 11757312, while the sum is 60.
The spelling of 80939087943 in words is "eighty billion, nine hundred thirty-nine million, eighty-seven thousand, nine hundred forty-three".
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