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26855068065 = 3571923585269
BaseRepresentation
bin11001000000101011…
…111101000110100001
32120022120112210210120
4121000223331012201
5414444344134230
620200445150453
71640331212040
oct310053750641
976276483716
1026855068065
1110430a93131
12525585b429
1326bc967727
14142a8b6557
15a729a7310
hex640afd1a1

26855068065 has 64 divisors (see below), whose sum is σ = 53938483200. Its totient is φ = 11124774144.

The previous prime is 26855068061. The next prime is 26855068091. The reversal of 26855068065 is 56086055862.

It is not a de Polignac number, because 26855068065 - 22 = 26855068061 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26855067999 and 26855068017.

It is not an unprimeable number, because it can be changed into a prime (26855068061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 246750 + ... + 338519.

It is an arithmetic number, because the mean of its divisors is an integer number (842788800).

Almost surely, 226855068065 is an apocalyptic number.

It is an amenable number.

26855068065 is an abundant number, since it is smaller than the sum of its proper divisors (27083415135).

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

26855068065 is a wasteful number, since it uses less digits than its factorization.

26855068065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585326.

The product of its (nonzero) digits is 3456000, while the sum is 51.

The spelling of 26855068065 in words is "twenty-six billion, eight hundred fifty-five million, sixty-eight thousand, sixty-five".

Divisors: 1 3 5 7 15 19 21 23 35 57 69 95 105 115 133 161 285 345 399 437 483 665 805 1311 1995 2185 2415 3059 6555 9177 15295 45885 585269 1755807 2926345 4096883 8779035 11120111 12290649 13461187 20484415 33360333 40383561 55600555 61453245 67305935 77840777 94228309 166801665 201917805 233522331 255762553 282684927 389203885 471141545 767287659 1167611655 1278812765 1413424635 1790337871 3836438295 5371013613 8951689355 26855068065