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17128381431418 = 2139947831279877
BaseRepresentation
bin1111100101000000001100…
…0101110011111001111010
32020122110100100111200010221
43321100003011303321322
54221112411121301133
6100232400402130254
73415325154644155
oct371200305637172
966573310450127
1017128381431418
115504118866a04
121b0771835098a
13973279220b8a
144330378a4c9c
151ea836339a2d
hexf9403173e7a

17128381431418 has 16 divisors (see below), whose sum is σ = 25716332678400. Its totient is φ = 8556273110736.

The previous prime is 17128381431377. The next prime is 17128381431439. The reversal of 17128381431418 is 81413418382171.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12742896 + ... + 14022772.

It is an arithmetic number, because the mean of its divisors is an integer number (1607270792400).

Almost surely, 217128381431418 is an apocalyptic number.

17128381431418 is a deficient number, since it is larger than the sum of its proper divisors (8587951246982).

17128381431418 is a wasteful number, since it uses less digits than its factorization.

17128381431418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286061.

The product of its digits is 1032192, while the sum is 52.

The spelling of 17128381431418 in words is "seventeen trillion, one hundred twenty-eight billion, three hundred eighty-one million, four hundred thirty-one thousand, four hundred eighteen".

Divisors: 1 2 1399 2798 4783 9566 1279877 2559754 6691417 13382834 1790547923 3581095846 6121651691 12243303382 8564190715709 17128381431418