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12663230045 = 517229302189
BaseRepresentation
bin10111100101100100…
…11000111001011101
31012200112002201221012
423302302120321131
5201413241330140
65452320545005
7625543452014
oct136262307135
935615081835
1012663230045
115409077184
122554a82165
13126a69b63b
14881b43a7b
154e1acd265
hex2f2c98e5d

12663230045 has 24 divisors (see below), whose sum is σ = 16699019400. Its totient is φ = 9205855232.

The previous prime is 12663230033. The next prime is 12663230053. The reversal of 12663230045 is 54003236621.

It can be written as a sum of positive squares in 12 ways, for example, as 1245666436 + 11417563609 = 35294^2 + 106853^2 .

It is not a de Polignac number, because 12663230045 - 26 = 12663229981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12663229993 and 12663230020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109190 + ... + 192999.

It is an arithmetic number, because the mean of its divisors is an integer number (695792475).

Almost surely, 212663230045 is an apocalyptic number.

It is an amenable number.

12663230045 is a deficient number, since it is larger than the sum of its proper divisors (4035789355).

12663230045 is a wasteful number, since it uses less digits than its factorization.

12663230045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302257 (or 302240 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 12663230045 its reverse (54003236621), we get a palindrome (66666466666).

The spelling of 12663230045 in words is "twelve billion, six hundred sixty-three million, two hundred thirty thousand, forty-five".

Divisors: 1 5 17 29 85 145 289 493 1445 2465 8381 41905 302189 1510945 5137213 8763481 25686065 43817405 87332621 148979177 436663105 744895885 2532646009 12663230045