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51579842788448 = 2513472638085249
BaseRepresentation
bin10111011101001010111100…
…01101001111110001100000
320202121222120221002022011022
423232211132031033301200
523230041004223212243
6301411241435105012
713602343405514432
oct1356453615176140
9222558527068138
1051579842788448
1115486985630157
125950628ba2168
1322a1c5c518bb0
14ca4698ba8652
155e6a9b7c1b68
hex2ee95e34fc60

51579842788448 has 48 divisors (see below), whose sum is σ = 111685977144000. Its totient is φ = 23299568910336.

The previous prime is 51579842788421. The next prime is 51579842788451. The reversal of 51579842788448 is 84488724897515.

It is a super-2 number, since 2×515798427884482 (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1319023073 + ... + 1319062176.

It is an arithmetic number, because the mean of its divisors is an integer number (2326791190500).

Almost surely, 251579842788448 is an apocalyptic number.

It is an amenable number.

51579842788448 is an abundant number, since it is smaller than the sum of its proper divisors (60106134355552).

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

51579842788448 is a wasteful number, since it uses less digits than its factorization.

51579842788448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638085319 (or 2638085311 counting only the distinct ones).

The product of its digits is 5780275200, while the sum is 80.

The spelling of 51579842788448 in words is "fifty-one trillion, five hundred seventy-nine billion, eight hundred forty-two million, seven hundred eighty-eight thousand, four hundred forty-eight".

Divisors: 1 2 4 8 13 16 26 32 47 52 94 104 188 208 376 416 611 752 1222 1504 2444 4888 9776 19552 2638085249 5276170498 10552340996 21104681992 34295108237 42209363984 68590216474 84418727968 123990006703 137180432948 247980013406 274360865896 495960026812 548721731792 991920053624 1097443463584 1611870087139 1983840107248 3223740174278 3967680214496 6447480348556 12894960697112 25789921394224 51579842788448