Base | Representation |
---|---|
bin | 1100010110100011… |
… | …10001111100110001 |
3 | 122010011122022011110 |
4 | 12023101301330301 |
5 | 102040201130421 |
6 | 3014015303533 |
7 | 323224122453 |
oct | 61321617461 |
9 | 18104568143 |
10 | 6631661361 |
11 | 28a3444376 |
12 | 1350b1aba9 |
13 | 818bcb8a0 |
14 | 46ca782d3 |
15 | 28c30ba76 |
hex | 18b471f31 |
6631661361 has 32 divisors (see below), whose sum is σ = 9647527680. Its totient is φ = 4027567104.
The previous prime is 6631661341. The next prime is 6631661363. The reversal of 6631661361 is 1631661366.
6631661361 is a nontrivial binomial coefficient, being equal to C(115167, 2).
It is not a de Polignac number, because 6631661361 - 211 = 6631659313 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (39).
It is not an unprimeable number, because it can be changed into a prime (6631661363) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2244261 + ... + 2247213.
It is an arithmetic number, because the mean of its divisors is an integer number (301485240).
Almost surely, 26631661361 is an apocalyptic number.
6631661361 is the 115166-th triangular number.
It is an amenable number.
6631661361 is a deficient number, since it is larger than the sum of its proper divisors (3015866319).
6631661361 is a wasteful number, since it uses less digits than its factorization.
6631661361 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3705.
The product of its digits is 69984, while the sum is 39.
The square root of 6631661361 is about 81435.0131147530. The cubic root of 6631661361 is about 1878.7721499074.
The spelling of 6631661361 in words is "six billion, six hundred thirty-one million, six hundred sixty-one thousand, three hundred sixty-one".
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