Base | Representation |
---|---|
bin | 10110101001100011… |
… | …00110100011111001 |
3 | 1011101102122010200210 |
4 | 23110301212203321 |
5 | 144400341114020 |
6 | 5330332421333 |
7 | 610220543640 |
oct | 132461464371 |
9 | 34342563623 |
10 | 12159707385 |
11 | 517a924151 |
12 | 2434317849 |
13 | 11ba282037 |
14 | 834d12357 |
15 | 4b27bb3e0 |
hex | 2d4c668f9 |
12159707385 has 32 divisors (see below), whose sum is σ = 23542831872. Its totient is φ = 5231738880.
The previous prime is 12159707363. The next prime is 12159707423. The reversal of 12159707385 is 58370795121.
It is not a de Polignac number, because 12159707385 - 25 = 12159707353 is a prime.
It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Curzon number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3404296 + ... + 3407865.
It is an arithmetic number, because the mean of its divisors is an integer number (735713496).
Almost surely, 212159707385 is an apocalyptic number.
12159707385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
12159707385 is a deficient number, since it is larger than the sum of its proper divisors (11383124487).
12159707385 is a wasteful number, since it uses less digits than its factorization.
12159707385 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6812193.
The product of its (nonzero) digits is 529200, while the sum is 48.
The spelling of 12159707385 in words is "twelve billion, one hundred fifty-nine million, seven hundred seven thousand, three hundred eighty-five".
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