Base | Representation |
---|---|
bin | 10010101111110101… |
… | …111001001111110001 |
3 | 1220221220011110120112 |
4 | 102233311321033301 |
5 | 312211240310342 |
6 | 13125251551105 |
7 | 1311561156041 |
oct | 225765711761 |
9 | 56856143515 |
10 | 20130010097 |
11 | 859a95858a |
12 | 3a995bb495 |
13 | 1b8a5c7ba2 |
14 | d8d689721 |
15 | 7cc39c682 |
hex | 4afd793f1 |
20130010097 has 8 divisors (see below), whose sum is σ = 21315556296. Its totient is φ = 18944622592.
The previous prime is 20130010079. The next prime is 20130010139. The reversal of 20130010097 is 79001003102.
It can be written as a sum of positive squares in 4 ways, for example, as 869011441 + 19260998656 = 29479^2 + 138784^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 20130010097 - 28 = 20130009841 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (20130010597) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309233 + ... + 368625.
It is an arithmetic number, because the mean of its divisors is an integer number (2664444537).
Almost surely, 220130010097 is an apocalyptic number.
It is an amenable number.
20130010097 is a deficient number, since it is larger than the sum of its proper divisors (1185546199).
20130010097 is a wasteful number, since it uses less digits than its factorization.
20130010097 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 79347.
The product of its (nonzero) digits is 378, while the sum is 23.
Adding to 20130010097 its reverse (79001003102), we get a palindrome (99131013199).
The spelling of 20130010097 in words is "twenty billion, one hundred thirty million, ten thousand, ninety-seven".
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