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53800081655 = 51923312273499
BaseRepresentation
bin110010000110101111…
…000001100011110111
312010212102100022122212
4302012233001203313
51340140310103110
640414310244035
73613134102005
oct620657014367
9163772308585
1053800081655
11208a881a701
12a51565661b
1350c5135358
1428652c3a75
1515ed2c9e05
hexc86bc18f7

53800081655 has 64 divisors (see below), whose sum is σ = 73543680000. Its totient is φ = 37566840960.

The previous prime is 53800081651. The next prime is 53800081681. The reversal of 53800081655 is 55618000835.

It is not a de Polignac number, because 53800081655 - 22 = 53800081651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53800081651) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 15374096 + ... + 15377594.

It is an arithmetic number, because the mean of its divisors is an integer number (1149120000).

Almost surely, 253800081655 is an apocalyptic number.

53800081655 is a deficient number, since it is larger than the sum of its proper divisors (19743598345).

53800081655 is a wasteful number, since it uses less digits than its factorization.

53800081655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804.

The product of its (nonzero) digits is 144000, while the sum is 41.

The spelling of 53800081655 in words is "fifty-three billion, eight hundred million, eighty-one thousand, six hundred fifty-five".

Divisors: 1 5 19 23 31 95 115 155 227 437 589 713 1135 2185 2945 3499 3565 4313 5221 7037 13547 17495 21565 26105 35185 66481 67735 80477 99199 108469 133703 161851 332405 402385 495995 542345 668515 794273 809255 1529063 2060911 2494787 3075169 3971365 7645315 10304555 12473935 15091187 15375845 18268279 24622463 47400953 75455935 91341395 123112315 237004765 347097301 467826797 566316649 1735486505 2339133985 2831583245 10760016331 53800081655