Base | Representation |
---|---|
bin | 10010101000101101… |
… | …111000111001011001 |
3 | 1220122120020020202121 |
4 | 102220231320321121 |
5 | 311440140033001 |
6 | 13105341501241 |
7 | 1305610124413 |
oct | 225055707131 |
9 | 56576206677 |
10 | 20010471001 |
11 | 8539431044 |
12 | 3a65571821 |
13 | 1b6b9029b1 |
14 | d7b84d9b3 |
15 | 7c1b386a1 |
hex | 4a8b78e59 |
20010471001 has 2 divisors, whose sum is σ = 20010471002. Its totient is φ = 20010471000.
The previous prime is 20010470969. The next prime is 20010471007. The reversal of 20010471001 is 10017401002.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 14873022025 + 5137448976 = 121955^2 + 71676^2 .
It is a cyclic number.
It is not a de Polignac number, because 20010471001 - 25 = 20010470969 is a prime.
It is not a weakly prime, because it can be changed into another prime (20010471007) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005235500 + 10005235501.
It is an arithmetic number, because the mean of its divisors is an integer number (10005235501).
Almost surely, 220010471001 is an apocalyptic number.
It is an amenable number.
20010471001 is a deficient number, since it is larger than the sum of its proper divisors (1).
20010471001 is an equidigital number, since it uses as much as digits as its factorization.
20010471001 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 16.
Adding to 20010471001 its reverse (10017401002), we get a palindrome (30027872003).
The spelling of 20010471001 in words is "twenty billion, ten million, four hundred seventy-one thousand, one".
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