Base | Representation |
---|---|
bin | 10111110110110101… |
… | …01001011001100011 |
3 | 1020001121111212111222 |
4 | 23323122221121203 |
5 | 202212322013443 |
6 | 5514531525255 |
7 | 632252133101 |
oct | 137332513143 |
9 | 36047455458 |
10 | 12808001123 |
11 | 54828678a5 |
12 | 259545982b |
13 | 12916894b8 |
14 | 89706ac71 |
15 | 4ee678468 |
hex | 2fb6a9663 |
12808001123 has 2 divisors, whose sum is σ = 12808001124. Its totient is φ = 12808001122.
The previous prime is 12808001057. The next prime is 12808001179. The reversal of 12808001123 is 32110080821.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 12808001123 - 232 = 8513033827 is a prime.
It is a super-2 number, since 2×128080011232 (a number of 21 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 12808001092 and 12808001101.
It is not a weakly prime, because it can be changed into another prime (12808001623) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6404000561 + 6404000562.
It is an arithmetic number, because the mean of its divisors is an integer number (6404000562).
Almost surely, 212808001123 is an apocalyptic number.
12808001123 is a deficient number, since it is larger than the sum of its proper divisors (1).
12808001123 is an equidigital number, since it uses as much as digits as its factorization.
12808001123 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 768, while the sum is 26.
Adding to 12808001123 its reverse (32110080821), we get a palindrome (44918081944).
The spelling of 12808001123 in words is "twelve billion, eight hundred eight million, one thousand, one hundred twenty-three".
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