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208664443130 = 251121313265381
BaseRepresentation
bin1100001001010101011…
…1101011100011111010
3201221121011222000000112
43002111113223203322
511404321044140010
6235505323104322
721034620334103
oct3022527534372
9657534860015
10208664443130
1180548702600
12345353720a2
13168a54022c0
14a156b093aa
155663e6ba05
hex30955eb8fa

208664443130 has 48 divisors (see below), whose sum is σ = 444602543112. Its totient is φ = 70041206400.

The previous prime is 208664443129. The next prime is 208664443151. The reversal of 208664443130 is 31344466802.

208664443130 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 90371783161 + 118292659969 = 300619^2 + 343937^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6616961 + ... + 6648420.

Almost surely, 2208664443130 is an apocalyptic number.

208664443130 is an abundant number, since it is smaller than the sum of its proper divisors (235938099982).

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

208664443130 is a wasteful number, since it uses less digits than its factorization.

208664443130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13265423 (or 13265412 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 208664443130 in words is "two hundred eight billion, six hundred sixty-four million, four hundred forty-three thousand, one hundred thirty".

Divisors: 1 2 5 10 11 13 22 26 55 65 110 121 130 143 242 286 605 715 1210 1430 1573 3146 7865 15730 13265381 26530762 66326905 132653810 145919191 172449953 291838382 344899906 729595955 862249765 1459191910 1605111101 1724499530 1896949483 3210222202 3793898966 8025555505 9484747415 16051111010 18969494830 20866444313 41732888626 104332221565 208664443130