Base | Representation |
---|---|
bin | 11000001000011011… |
… | …01111011010101101 |
3 | 1020102220021022201210 |
4 | 30010031233122231 |
5 | 203013114102340 |
6 | 5541323425033 |
7 | 636023615010 |
oct | 140415573255 |
9 | 36386238653 |
10 | 12955612845 |
11 | 554911875a |
12 | 2616985179 |
13 | 12b6130306 |
14 | 8ac8d3377 |
15 | 50c5d5180 |
hex | 30436f6ad |
12955612845 has 64 divisors (see below), whose sum is σ = 25517850624. Its totient is φ = 5482287360.
The previous prime is 12955612819. The next prime is 12955612849. The reversal of 12955612845 is 54821655921.
It is not a de Polignac number, because 12955612845 - 28 = 12955612589 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 12955612794 and 12955612803.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12955612849) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11662 + ... + 161391.
It is an arithmetic number, because the mean of its divisors is an integer number (398716416).
Almost surely, 212955612845 is an apocalyptic number.
12955612845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
12955612845 is a deficient number, since it is larger than the sum of its proper divisors (12562237779).
12955612845 is a wasteful number, since it uses less digits than its factorization.
12955612845 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 173122.
The product of its digits is 864000, while the sum is 48.
The spelling of 12955612845 in words is "twelve billion, nine hundred fifty-five million, six hundred twelve thousand, eight hundred forty-five".
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