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12552082515 = 335717898779
BaseRepresentation
bin10111011000010100…
…11001010001010011
31012101202221212012000
423230022121101103
5201201313120030
65433310405043
7623023640520
oct135412312123
935352855160
1012552082515
115361361415
122523800783
131250653b7b
14871090147
154d6e75860
hex2ec299453

12552082515 has 128 divisors (see below), whose sum is σ = 27309312000. Its totient is φ = 5339271168.

The previous prime is 12552082513. The next prime is 12552082519. The reversal of 12552082515 is 51528025521.

12552082515 is a `hidden beast` number, since 1 + 2 + 5 + 520 + 82 + 51 + 5 = 666.

It is not a de Polignac number, because 12552082515 - 21 = 12552082513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12552082515.

It is not an unprimeable number, because it can be changed into a prime (12552082511) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1425396 + ... + 1434174.

It is an arithmetic number, because the mean of its divisors is an integer number (213354000).

Almost surely, 212552082515 is an apocalyptic number.

12552082515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12552082515 is an abundant number, since it is smaller than the sum of its proper divisors (14757229485).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12552082515 is a wasteful number, since it uses less digits than its factorization.

12552082515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8906 (or 8900 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 36.

The spelling of 12552082515 in words is "twelve billion, five hundred fifty-two million, eighty-two thousand, five hundred fifteen".

Divisors: 1 3 5 7 9 15 17 21 27 35 45 51 63 85 89 105 119 135 153 189 255 267 315 357 445 459 595 623 765 801 945 1071 1335 1513 1785 1869 2295 2403 3115 3213 4005 4539 5355 5607 7565 8779 9345 10591 12015 13617 16065 16821 22695 26337 28035 31773 40851 43895 52955 61453 68085 79011 84105 95319 131685 149243 158865 184359 204255 237033 285957 307265 395055 447729 476595 553077 746215 781331 921795 1044701 1185165 1343187 1429785 1659231 2238645 2343993 2765385 3134103 3906655 4029561 5223505 5469317 6715935 7031979 8296155 9402309 11719965 13282627 15670515 16407951 20147805 21095937 27346585 28206927 35159895 39847881 47011545 49223853 66413135 82039755 92978389 105479685 119543643 141034635 147671559 199239405 246119265 278935167 358630929 464891945 597718215 738357795 836805501 1394675835 1793154645 2510416503 4184027505 12552082515