Base | Representation |
---|---|
bin | 10100101100100010… |
… | …01000111001110001 |
3 | 1001200100022210012101 |
4 | 22112101020321301 |
5 | 140223404304110 |
6 | 5034311300401 |
7 | 542225011612 |
oct | 122621107161 |
9 | 31610283171 |
10 | 11111009905 |
11 | 479196a216 |
12 | 21a107a701 |
13 | 1080c24598 |
14 | 775929c09 |
15 | 4506bb13a |
hex | 296448e71 |
11111009905 has 32 divisors (see below), whose sum is σ = 14597107200. Its totient is φ = 8089466112.
The previous prime is 11111009879. The next prime is 11111009911. The reversal of 11111009905 is 50990011111.
It is a happy number.
It is a cyclic number.
It is not a de Polignac number, because 11111009905 - 223 = 11102621297 is a prime.
It is a super-2 number, since 2×111110099052 (a number of 21 digits) contains 22 as substring.
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, 257679 + ... + 297691.
It is an arithmetic number, because the mean of its divisors is an integer number (456159600).
Almost surely, 211111009905 is an apocalyptic number.
It is an amenable number.
11111009905 is a deficient number, since it is larger than the sum of its proper divisors (3486097295).
11111009905 is a wasteful number, since it uses less digits than its factorization.
11111009905 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 40153.
The product of its (nonzero) digits is 405, while the sum is 28.
The spelling of 11111009905 in words is "eleven billion, one hundred eleven million, nine thousand, nine hundred five".
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