Base | Representation |
---|---|
bin | 110000100010000000011001… |
… | …100100001100101100110101 |
3 | 1000222201222000021110221112100 |
4 | 300202000121210030230311 |
5 | 210434023004124132441 |
6 | 2033542230052012313 |
7 | 62646520403135220 |
oct | 6042003144145465 |
9 | 1028658007427470 |
10 | 213443123661621 |
11 | 620117a1946707 |
12 | 1bb3285a301099 |
13 | 92137a5828b69 |
14 | 3a9c9b91b25b7 |
15 | 19a222ae75cb6 |
hex | c2201990cb35 |
213443123661621 has 96 divisors (see below), whose sum is σ = 353819489257728. Its totient is φ = 121460333644800.
The previous prime is 213443123661619. The next prime is 213443123661689. The reversal of 213443123661621 is 126166321344312.
213443123661621 is a `hidden beast` number, since 2 + 1 + 3 + 4 + 4 + 3 + 1 + 2 + 3 + 6 + 616 + 21 = 666.
It is not a de Polignac number, because 213443123661621 - 21 = 213443123661619 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (213443123661121) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 43233362665 + ... + 43233367601.
It is an arithmetic number, because the mean of its divisors is an integer number (3685619679768).
Almost surely, 2213443123661621 is an apocalyptic number.
213443123661621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.
It is an amenable number.
213443123661621 is a deficient number, since it is larger than the sum of its proper divisors (140376365596107).
213443123661621 is a wasteful number, since it uses less digits than its factorization.
213443123661621 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8091 (or 8088 counting only the distinct ones).
The product of its digits is 746496, while the sum is 45.
The spelling of 213443123661621 in words is "two hundred thirteen trillion, four hundred forty-three billion, one hundred twenty-three million, six hundred sixty-one thousand, six hundred twenty-one".
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