Base | Representation |
---|---|
bin | 10111111110001110… |
… | …11011101010100001 |
3 | 1020012221022110010010 |
4 | 23333013123222201 |
5 | 202324214313433 |
6 | 5525030155133 |
7 | 633634546461 |
oct | 137707335241 |
9 | 36187273103 |
10 | 12870072993 |
11 | 5504903368 |
12 | 25b21b2aa9 |
13 | 12a14b050b |
14 | 8a13c7ba1 |
15 | 504d39e63 |
hex | 2ff1dbaa1 |
12870072993 has 16 divisors (see below), whose sum is σ = 17910426240. Its totient is φ = 8205060864.
The previous prime is 12870072931. The next prime is 12870073019. The reversal of 12870072993 is 39927007821.
It is not a de Polignac number, because 12870072993 - 220 = 12869024417 is a prime.
It is not an unprimeable number, because it can be changed into a prime (12870072913) 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, 306873 + ... + 346281.
It is an arithmetic number, because the mean of its divisors is an integer number (1119401640).
Almost surely, 212870072993 is an apocalyptic number.
It is an amenable number.
12870072993 is a deficient number, since it is larger than the sum of its proper divisors (5040353247).
12870072993 is a wasteful number, since it uses less digits than its factorization.
12870072993 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 44168.
The product of its (nonzero) digits is 381024, while the sum is 48.
The spelling of 12870072993 in words is "twelve billion, eight hundred seventy million, seventy-two thousand, nine hundred ninety-three".
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