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12080206650 = 23521929146161
BaseRepresentation
bin10110100000000100…
…10101001100111010
31011011220001002012010
423100002111030322
5144220013103100
65314412430350
7605234030241
oct132002251472
934156032163
1012080206650
115139a64066
1224117783b6
1311a6967c95
14828539958
154aa815750
hex2d009533a

12080206650 has 96 divisors (see below), whose sum is σ = 32623358400. Its totient is φ = 2946585600.

The previous prime is 12080206643. The next prime is 12080206687. The reversal of 12080206650 is 5660208021.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9570 + ... + 155730.

It is an arithmetic number, because the mean of its divisors is an integer number (339826650).

Almost surely, 212080206650 is an apocalyptic number.

12080206650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12080206650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16311679200).

12080206650 is an abundant number, since it is smaller than the sum of its proper divisors (20543151750).

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

12080206650 is a wasteful number, since it uses less digits than its factorization.

12080206650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146224 (or 146219 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 12080206650 in words is "twelve billion, eighty million, two hundred six thousand, six hundred fifty".

Divisors: 1 2 3 5 6 10 15 19 25 29 30 38 50 57 58 75 87 95 114 145 150 174 190 285 290 435 475 551 570 725 870 950 1102 1425 1450 1653 2175 2755 2850 3306 4350 5510 8265 13775 16530 27550 41325 82650 146161 292322 438483 730805 876966 1461610 2192415 2777059 3654025 4238669 4384830 5554118 7308050 8331177 8477338 10962075 12716007 13885295 16662354 21193345 21924150 25432014 27770590 41655885 42386690 63580035 69426475 80534711 83311770 105966725 127160070 138852950 161069422 208279425 211933450 241604133 317900175 402673555 416558850 483208266 635800350 805347110 1208020665 2013367775 2416041330 4026735550 6040103325 12080206650