Base | Representation |
---|---|
bin | 100000001010010011… |
… | …0100101111100110011 |
3 | 20121021021020112021000 |
4 | 1000110212211330303 |
5 | 2112421133403341 |
6 | 51421133333043 |
7 | 4663332662244 |
oct | 1002446457463 |
9 | 217237215230 |
10 | 69065137971 |
11 | 27321519425 |
12 | 11475937183 |
13 | 6688865c5b |
14 | 34b27c2ccb |
15 | 1be34e98b6 |
hex | 10149a5f33 |
69065137971 has 32 divisors (see below), whose sum is σ = 103798886400. Its totient is φ = 45381785760.
The previous prime is 69065137937. The next prime is 69065137979. The reversal of 69065137971 is 17973156096.
It is a happy number.
It is not a de Polignac number, because 69065137971 - 210 = 69065136947 is a prime.
It is not an unprimeable number, because it can be changed into a prime (69065137979) 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, 500680 + ... + 623546.
It is an arithmetic number, because the mean of its divisors is an integer number (3243715200).
Almost surely, 269065137971 is an apocalyptic number.
69065137971 is a deficient number, since it is larger than the sum of its proper divisors (34733748429).
69065137971 is a wasteful number, since it uses less digits than its factorization.
69065137971 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 123176 (or 123170 counting only the distinct ones).
The product of its (nonzero) digits is 2143260, while the sum is 54.
The spelling of 69065137971 in words is "sixty-nine billion, sixty-five million, one hundred thirty-seven thousand, nine hundred seventy-one".
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