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19909832168960 = 2957777278191
BaseRepresentation
bin1001000011011100111100…
…11110010101011000000000
32121111100202102210002121222
410201232132132111120000
510102200314013401320
6110202241200334212
74123303126061666
oct441563636253000
977440672702558
1019909832168960
116386792236008
1222967aa614368
13b1564878b766
144cb8d8d52c36
15247d78e06825
hex121b9e795600

19909832168960 has 40 divisors (see below), whose sum is σ = 47736933542496. Its totient is φ = 7963932866560.

The previous prime is 19909832168939. The next prime is 19909832169001. The reversal of 19909832168960 is 6986123890991.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3888636536 + ... + 3888641655.

Almost surely, 219909832168960 is an apocalyptic number.

19909832168960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19909832168960 is an abundant number, since it is smaller than the sum of its proper divisors (27827101373536).

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

19909832168960 is an frugal number, since it uses more digits than its factorization.

19909832168960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7777278214 (or 7777278198 counting only the distinct ones).

The product of its (nonzero) digits is 90699264, while the sum is 71.

The spelling of 19909832168960 in words is "nineteen trillion, nine hundred nine billion, eight hundred thirty-two million, one hundred sixty-eight thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 1280 2560 7777278191 15554556382 31109112764 38886390955 62218225528 77772781910 124436451056 155545563820 248872902112 311091127640 497745804224 622182255280 995491608448 1244364510560 1990983216896 2488729021120 3981966433792 4977458042240 9954916084480 19909832168960