Base | Representation |
---|---|
bin | 10110110000101101… |
… | …01011100011010101 |
3 | 1011112121122001202110 |
4 | 23120112223203111 |
5 | 200011224240210 |
6 | 5340315501233 |
7 | 611550143652 |
oct | 133026534325 |
9 | 34477561673 |
10 | 12219758805 |
11 | 520080a721 |
12 | 2450457819 |
13 | 11c9849517 |
14 | 83cca4c29 |
15 | 4b7bce420 |
hex | 2d85ab8d5 |
12219758805 has 32 divisors (see below), whose sum is σ = 19872552960. Its totient is φ = 6411067200.
The previous prime is 12219758779. The next prime is 12219758807. The reversal of 12219758805 is 50885791221.
It is not a de Polignac number, because 12219758805 - 25 = 12219758773 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12219758807) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 207106 + ... + 259484.
It is an arithmetic number, because the mean of its divisors is an integer number (621017280).
Almost surely, 212219758805 is an apocalyptic number.
12219758805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
12219758805 is a deficient number, since it is larger than the sum of its proper divisors (7652794155).
12219758805 is a wasteful number, since it uses less digits than its factorization.
12219758805 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 52641.
The product of its (nonzero) digits is 403200, while the sum is 48.
The spelling of 12219758805 in words is "twelve billion, two hundred nineteen million, seven hundred fifty-eight thousand, eight hundred five".
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