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80268583549 = 71137131449479
BaseRepresentation
bin100101011000001100…
…0010110001001111101
321200012001111112100211
41022300120112021331
52303342224133144
6100512550152421
75541062463010
oct1126030261175
9250161445324
1080268583549
1131050582960
1213681952711
137752982cab
143c566d1377
15214bd74034
hex12b061627d

80268583549 has 64 divisors (see below), whose sum is σ = 104011776000. Its totient is φ = 60131635200.

The previous prime is 80268583547. The next prime is 80268583573. The reversal of 80268583549 is 94538586208.

It is not a de Polignac number, because 80268583549 - 21 = 80268583547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80268583493 and 80268583502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80268583547) 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 63 ways as a sum of consecutive naturals, for example, 167575092 + ... + 167575570.

It is an arithmetic number, because the mean of its divisors is an integer number (1625184000).

Almost surely, 280268583549 is an apocalyptic number.

It is an amenable number.

80268583549 is a deficient number, since it is larger than the sum of its proper divisors (23743192451).

80268583549 is a wasteful number, since it uses less digits than its factorization.

80268583549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114.

The product of its (nonzero) digits is 16588800, while the sum is 58.

The spelling of 80268583549 in words is "eighty billion, two hundred sixty-eight million, five hundred eighty-three thousand, five hundred forty-nine".

Divisors: 1 7 11 37 77 131 259 407 449 479 917 1441 2849 3143 3353 4847 4939 5269 10087 16613 17723 33929 34573 36883 53317 58819 62749 116291 124061 182743 194953 215071 373219 411733 439243 647009 690239 1279201 1364671 1505497 2176303 2321713 2365781 4529063 4831673 7957627 15234121 16251991 16560467 23939333 25538843 28174301 55703389 87533897 167575331 178771901 197220107 309917311 612737279 1042449137 2169421177 7297143959 11466940507 80268583549