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208908045705 = 3518317606337
BaseRepresentation
bin1100001010001111100…
…0111100110110001001
3201222020011100021221010
43002203320330312021
511410320424430310
6235545424234133
721043636042512
oct3024370746611
9658204307833
10208908045705
1180663166847
12345a2a6b949
1316913a14b38
14a17b1dba09
15567a53a320
hex30a3e3cd89

208908045705 has 16 divisors (see below), whose sum is σ = 334435469184. Its totient is φ = 111356759040.

The previous prime is 208908045701. The next prime is 208908045737. The reversal of 208908045705 is 507540809802.

208908045705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 208908045705 - 22 = 208908045701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208908045701) 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 15 ways as a sum of consecutive naturals, for example, 3775704 + ... + 3830633.

It is an arithmetic number, because the mean of its divisors is an integer number (20902216824).

Almost surely, 2208908045705 is an apocalyptic number.

It is an amenable number.

208908045705 is a deficient number, since it is larger than the sum of its proper divisors (125527423479).

208908045705 is a wasteful number, since it uses less digits than its factorization.

208908045705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7608176.

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 208908045705 in words is "two hundred eight billion, nine hundred eight million, forty-five thousand, seven hundred five".

Divisors: 1 3 5 15 1831 5493 9155 27465 7606337 22819011 38031685 114095055 13927203047 41781609141 69636015235 208908045705