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120969808080 = 24351124165627
BaseRepresentation
bin111000010101001011…
…1001100100011010000
3102120020121000222002020
41300222113030203100
53440221232324310
6131323414451440
711511513255132
oct1605227144320
9376217028066
10120969808080
1147337337300
121b540663b80
13b53b0b30c4
145bd8075052
1532301c1170
hex1c2a5cc8d0

120969808080 has 120 divisors (see below), whose sum is σ = 412197221856. Its totient is φ = 29326007040.

The previous prime is 120969808049. The next prime is 120969808121. The reversal of 120969808080 is 80808969021.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2053774 + ... + 2111853.

Almost surely, 2120969808080 is an apocalyptic number.

120969808080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120969808080 is an abundant number, since it is smaller than the sum of its proper divisors (291227413776).

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

120969808080 is a wasteful number, since it uses less digits than its factorization.

120969808080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4165665 (or 4165648 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 51.

The spelling of 120969808080 in words is "one hundred twenty billion, nine hundred sixty-nine million, eight hundred eight thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 33 40 44 48 55 60 66 80 88 110 120 121 132 165 176 220 240 242 264 330 363 440 484 528 605 660 726 880 968 1210 1320 1452 1815 1936 2420 2640 2904 3630 4840 5808 7260 9680 14520 29040 4165627 8331254 12496881 16662508 20828135 24993762 33325016 41656270 45821897 49987524 62484405 66650032 83312540 91643794 99975048 124968810 137465691 166625080 183287588 199950096 229109485 249937620 274931382 333250160 366575176 458218970 499875240 504040867 549862764 687328455 733150352 916437940 999750480 1008081734 1099725528 1374656910 1512122601 1832875880 2016163468 2199451056 2520204335 2749313820 3024245202 3665751760 4032326936 5040408670 5498627640 6048490404 7560613005 8064653872 10080817340 10997255280 12096980808 15121226010 20161634680 24193961616 30242452020 40323269360 60484904040 120969808080