Base | Representation |
---|---|
bin | 10111110100101100… |
… | …11011111011010001 |
3 | 1020000100212102102112 |
4 | 23322112123323101 |
5 | 202143232321040 |
6 | 5513052355105 |
7 | 631644141005 |
oct | 137226337321 |
9 | 36010772375 |
10 | 12790120145 |
11 | 5473764630 |
12 | 258b475a95 |
13 | 128aa6873a |
14 | 894934705 |
15 | 4ecce5365 |
hex | 2fa59bed1 |
12790120145 has 16 divisors (see below), whose sum is σ = 16955377920. Its totient is φ = 9184156800.
The previous prime is 12790120121. The next prime is 12790120157. The reversal of 12790120145 is 54102109721.
It is not a de Polignac number, because 12790120145 - 214 = 12790103761 is a prime.
It is a Curzon number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1467476 + ... + 1476165.
It is an arithmetic number, because the mean of its divisors is an integer number (1059711120).
Almost surely, 212790120145 is an apocalyptic number.
It is an amenable number.
12790120145 is a deficient number, since it is larger than the sum of its proper divisors (4165257775).
12790120145 is a wasteful number, since it uses less digits than its factorization.
12790120145 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2943736.
The product of its (nonzero) digits is 5040, while the sum is 32.
Adding to 12790120145 its reverse (54102109721), we get a palindrome (66892229866).
The spelling of 12790120145 in words is "twelve billion, seven hundred ninety million, one hundred twenty thousand, one hundred forty-five".
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