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13163266662568 = 23117111681180361
BaseRepresentation
bin1011111110001100111111…
…0101010110000010101000
31201121101200200112022212221
42333203033311112002220
53211131332231200233
643555042103443424
72526005006341231
oct277431765260250
951541620468787
1013163266662568
114215567957890
121587167456574
137463a1934269
14337169718088
1517c617cde42d
hexbf8cfd560a8

13163266662568 has 64 divisors (see below), whose sum is σ = 27306575936640. Its totient is φ = 5898493440000.

The previous prime is 13163266662529. The next prime is 13163266662569. The reversal of 13163266662568 is 86526666236131.

It is not an unprimeable number, because it can be changed into a prime (13163266662569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72892708 + ... + 73073068.

It is an arithmetic number, because the mean of its divisors is an integer number (426665249010).

Almost surely, 213163266662568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13163266662568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13653287968320).

13163266662568 is an abundant number, since it is smaller than the sum of its proper divisors (14143309274072).

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

13163266662568 is a wasteful number, since it uses less digits than its factorization.

13163266662568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192130 (or 192126 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 61.

The spelling of 13163266662568 in words is "thirteen trillion, one hundred sixty-three billion, two hundred sixty-six million, six hundred sixty-two thousand, five hundred sixty-eight".

Divisors: 1 2 4 8 11 22 44 71 88 142 284 568 781 1562 3124 6248 11681 23362 46724 93448 128491 180361 256982 360722 513964 721444 829351 1027928 1442888 1658702 1983971 3317404 3967942 6634808 7935884 9122861 12805631 15871768 18245722 25611262 36491444 51222524 72982888 102445048 140861941 281723882 563447764 1126895528 2106796841 4213593682 8427187364 16854374728 23174765251 46349530502 92699061004 149582575711 185398122008 299165151422 598330302844 1196660605688 1645408332821 3290816665642 6581633331284 13163266662568