Base | Representation |
---|---|
bin | 10111110100100101… |
… | …00010110111100111 |
3 | 1020000021221121001122 |
4 | 23322102202313213 |
5 | 202143002200012 |
6 | 5513014444155 |
7 | 631632361565 |
oct | 137222426747 |
9 | 36007847048 |
10 | 12789100007 |
11 | 5473128142 |
12 | 258b06365b |
13 | 128a79c2c8 |
14 | 89474aa35 |
15 | 4ecb92e72 |
hex | 2fa4a2de7 |
12789100007 has 2 divisors, whose sum is σ = 12789100008. Its totient is φ = 12789100006.
The previous prime is 12789099989. The next prime is 12789100019. The reversal of 12789100007 is 70000198721.
It is a strong prime.
It is an emirp because it is prime and its reverse (70000198721) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 12789100007 - 26 = 12789099943 is a prime.
It is a super-2 number, since 2×127891000072 (a number of 21 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 12789100007.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12789100307) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6394550003 + 6394550004.
It is an arithmetic number, because the mean of its divisors is an integer number (6394550004).
Almost surely, 212789100007 is an apocalyptic number.
12789100007 is a deficient number, since it is larger than the sum of its proper divisors (1).
12789100007 is an equidigital number, since it uses as much as digits as its factorization.
12789100007 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 7056, while the sum is 35.
Adding to 12789100007 its reverse (70000198721), we get a palindrome (82789298728).
The spelling of 12789100007 in words is "twelve billion, seven hundred eighty-nine million, one hundred thousand, seven".
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