Base | Representation |
---|---|
bin | 10010101001010010… |
… | …010100001100110001 |
3 | 1220200020012101112212 |
4 | 102221102110030301 |
5 | 312000111120032 |
6 | 13110322301505 |
7 | 1306054235204 |
oct | 225122241461 |
9 | 56606171485 |
10 | 20020020017 |
11 | 8543863398 |
12 | 3a687b7895 |
13 | 1b708971ba |
14 | d7cc1793b |
15 | 7c28c2bb2 |
hex | 4a9494331 |
20020020017 has 2 divisors, whose sum is σ = 20020020018. Its totient is φ = 20020020016.
The previous prime is 20020019969. The next prime is 20020020043. The reversal of 20020020017 is 71002002002.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 10434826801 + 9585193216 = 102151^2 + 97904^2 .
It is a cyclic number.
It is not a de Polignac number, because 20020020017 - 228 = 19751584561 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 20020019983 and 20020020010.
It is not a weakly prime, because it can be changed into another prime (20020020077) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010010008 + 10010010009.
It is an arithmetic number, because the mean of its divisors is an integer number (10010010009).
Almost surely, 220020020017 is an apocalyptic number.
It is an amenable number.
20020020017 is a deficient number, since it is larger than the sum of its proper divisors (1).
20020020017 is an equidigital number, since it uses as much as digits as its factorization.
20020020017 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 56, while the sum is 14.
Adding to 20020020017 its reverse (71002002002), we get a palindrome (91022022019).
The spelling of 20020020017 in words is "twenty billion, twenty million, twenty thousand, seventeen".
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