Base | Representation |
---|---|
bin | 10111100011110111… |
… | …10101110101111111 |
3 | 1012122112012020220100 |
4 | 23301323311311333 |
5 | 201401111240222 |
6 | 5451050252143 |
7 | 625311064641 |
oct | 136173656577 |
9 | 35575166810 |
10 | 12648930687 |
11 | 5400a9a928 |
12 | 2550127053 |
13 | 1267732b93 |
14 | 87dca0891 |
15 | 4e07064ac |
hex | 2f1ef5d7f |
12648930687 has 6 divisors (see below), whose sum is σ = 18270677672. Its totient is φ = 8432620452.
The previous prime is 12648930683. The next prime is 12648930689. The reversal of 12648930687 is 78603984621.
12648930687 is a `hidden beast` number, since 126 + 489 + 30 + 6 + 8 + 7 = 666.
It is not a de Polignac number, because 12648930687 - 22 = 12648930683 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12648930683) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 702718363 + ... + 702718380.
Almost surely, 212648930687 is an apocalyptic number.
12648930687 is a deficient number, since it is larger than the sum of its proper divisors (5621746985).
12648930687 is a wasteful number, since it uses less digits than its factorization.
12648930687 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1405436749 (or 1405436746 counting only the distinct ones).
The product of its (nonzero) digits is 3483648, while the sum is 54.
The spelling of 12648930687 in words is "twelve billion, six hundred forty-eight million, nine hundred thirty thousand, six hundred eighty-seven".
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