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12726083045 = 5131345714549
BaseRepresentation
bin10111101101000100…
…01001110111100101
31012211220101000001002
423312202021313211
5202030334124140
65502444043045
7630235630634
oct136642116745
935756330032
1012726083045
1154405a6605
122571b33485
13127a707070
1488a22551b
154e7396415
hex2f6889de5

12726083045 has 16 divisors (see below), whose sum is σ = 16448367600. Its totient is φ = 9396378624.

The previous prime is 12726083009. The next prime is 12726083053. The reversal of 12726083045 is 54038062721.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1123992676 + 11602090369 = 33526^2 + 107713^2 .

It is a cyclic number.

It is not a de Polignac number, because 12726083045 - 210 = 12726082021 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 867431 + ... + 881979.

It is an arithmetic number, because the mean of its divisors is an integer number (1028022975).

Almost surely, 212726083045 is an apocalyptic number.

It is an amenable number.

12726083045 is a deficient number, since it is larger than the sum of its proper divisors (3722284555).

12726083045 is a wasteful number, since it uses less digits than its factorization.

12726083045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28024.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 12726083045 in words is "twelve billion, seven hundred twenty-six million, eighty-three thousand, forty-five".

Divisors: 1 5 13 65 13457 14549 67285 72745 174941 189137 874705 945685 195785893 978929465 2545216609 12726083045