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128542606283 = 71389107148331
BaseRepresentation
bin111011110110110111…
…1001000001111001011
3110021210100120222021202
41313231233020033023
54101223401400113
6135015054054415
712200256061040
oct1675557101713
9407710528252
10128542606283
114a572a4a713
1220ab47aa40b
13c176c7c4a0
146315ad71c7
153524e33258
hex1dedbc83cb

128542606283 has 32 divisors (see below), whose sum is σ = 161480148480. Its totient is φ = 99620801280.

The previous prime is 128542606271. The next prime is 128542606303. The reversal of 128542606283 is 382606245821.

It is a happy number.

It is not a de Polignac number, because 128542606283 - 24 = 128542606267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128542606223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 792428 + ... + 940758.

It is an arithmetic number, because the mean of its divisors is an integer number (5046254640).

Almost surely, 2128542606283 is an apocalyptic number.

128542606283 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

128542606283 is a deficient number, since it is larger than the sum of its proper divisors (32937542197).

128542606283 is a wasteful number, since it uses less digits than its factorization.

128542606283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148547.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 128542606283 in words is "one hundred twenty-eight billion, five hundred forty-two million, six hundred six thousand, two hundred eighty-three".

Divisors: 1 7 13 89 91 107 623 749 1157 1391 8099 9523 9737 66661 123799 148331 866593 1038317 1928303 13201459 13498121 15871417 92410213 111099919 171618967 206328421 1201332769 1412556113 1444298947 9887892791 18363229469 128542606283