Base | Representation |
---|---|
bin | 10111111111001110… |
… | …00011110110000111 |
3 | 1020020111220200021220 |
4 | 23333213003312013 |
5 | 202333330122124 |
6 | 5525524011423 |
7 | 634065200562 |
oct | 137747036607 |
9 | 36214820256 |
10 | 12878364039 |
11 | 5509556572 |
12 | 25b4b30b73 |
13 | 12a3124268 |
14 | 8a25454d9 |
15 | 505926879 |
hex | 2ff9c3d87 |
12878364039 has 16 divisors (see below), whose sum is σ = 17538312960. Its totient is φ = 8403736320.
The previous prime is 12878364019. The next prime is 12878364043. The reversal of 12878364039 is 93046387821.
It is not a de Polignac number, because 12878364039 - 28 = 12878363783 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 12878363982 and 12878364000.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12878364019) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187882 + ... + 247095.
It is an arithmetic number, because the mean of its divisors is an integer number (1096144560).
Almost surely, 212878364039 is an apocalyptic number.
12878364039 is a deficient number, since it is larger than the sum of its proper divisors (4659948921).
12878364039 is a wasteful number, since it uses less digits than its factorization.
12878364039 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 435190.
The product of its (nonzero) digits is 1741824, while the sum is 51.
The spelling of 12878364039 in words is "twelve billion, eight hundred seventy-eight million, three hundred sixty-four thousand, thirty-nine".
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