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51880458916 = 2211133536687
BaseRepresentation
bin110000010100010100…
…001111101010100100
311221220122020101022101
4300110110033222210
51322222344141131
635500014141444
73514434424156
oct602424175244
9157818211271
1051880458916
1120003191730
12a07a7b1884
134b7a521000
14272238cad6
1515399e2c61
hexc1450faa4

51880458916 has 48 divisors (see below), whose sum is σ = 107294664960. Its totient is φ = 21767984160.

The previous prime is 51880458907. The next prime is 51880458937. The reversal of 51880458916 is 61985408815.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171676 + ... + 365011.

It is an arithmetic number, because the mean of its divisors is an integer number (2235305520).

Almost surely, 251880458916 is an apocalyptic number.

It is an amenable number.

51880458916 is an abundant number, since it is smaller than the sum of its proper divisors (55414206044).

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

51880458916 is a wasteful number, since it uses less digits than its factorization.

51880458916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536741 (or 536713 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 55.

The spelling of 51880458916 in words is "fifty-one billion, eight hundred eighty million, four hundred fifty-eight thousand, nine hundred sixteen".

Divisors: 1 2 4 11 13 22 26 44 52 143 169 286 338 572 676 1859 2197 3718 4394 7436 8788 24167 48334 96668 536687 1073374 2146748 5903557 6976931 11807114 13953862 23614228 27907724 76746241 90700103 153492482 181400206 306984964 362800412 997701133 1179101339 1995402266 2358202678 3990804532 4716405356 12970114729 25940229458 51880458916