Base | Representation |
---|---|
bin | 10000110011110010010… |
… | …000011111101011011101 |
3 | 11002102112222212122221102 |
4 | 100303302100133223131 |
5 | 122411134101130121 |
6 | 2242353001042445 |
7 | 146311561662065 |
oct | 20636220375335 |
9 | 4072488778842 |
10 | 1155115645661 |
11 | 40597773937a |
12 | 167a51a86425 |
13 | 84c08637863 |
14 | 3dc9d3a03a5 |
15 | 200a94e290b |
hex | 10cf241fadd |
1155115645661 has 2 divisors, whose sum is σ = 1155115645662. Its totient is φ = 1155115645660.
The previous prime is 1155115645637. The next prime is 1155115645679. The reversal of 1155115645661 is 1665465115511.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 586495588900 + 568620056761 = 765830^2 + 754069^2 .
It is a cyclic number.
It is not a de Polignac number, because 1155115645661 - 230 = 1154041903837 is a prime.
It is a Sophie Germain prime.
It is a Curzon number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1155415645661) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577557822830 + 577557822831.
It is an arithmetic number, because the mean of its divisors is an integer number (577557822831).
Almost surely, 21155115645661 is an apocalyptic number.
It is an amenable number.
1155115645661 is a deficient number, since it is larger than the sum of its proper divisors (1).
1155115645661 is an equidigital number, since it uses as much as digits as its factorization.
1155115645661 is an evil number, because the sum of its binary digits is even.
The product of its digits is 540000, while the sum is 47.
The spelling of 1155115645661 in words is "one trillion, one hundred fifty-five billion, one hundred fifteen million, six hundred forty-five thousand, six hundred sixty-one".
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