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12857043160 = 23513534491039
BaseRepresentation
bin10111111100101011…
…01110100011011000
31020012000210110112201
423332111232203120
5202312400340120
65523443015544
7633416030563
oct137625564330
936160713481
1012857043160
1154a8513905
1225a996a5b4
13129b89a860
1489d7954da
15503b1440a
hex2fe56e8d8

12857043160 has 128 divisors (see below), whose sum is σ = 31842720000. Its totient is φ = 4642799616.

The previous prime is 12857043149. The next prime is 12857043187. The reversal of 12857043160 is 6134075821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12373921 + ... + 12374959.

It is an arithmetic number, because the mean of its divisors is an integer number (248771250).

Almost surely, 212857043160 is an apocalyptic number.

12857043160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12857043160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15921360000).

12857043160 is an abundant number, since it is smaller than the sum of its proper divisors (18985676840).

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

12857043160 is a wasteful number, since it uses less digits than its factorization.

12857043160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565 (or 1561 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 12857043160 in words is "twelve billion, eight hundred fifty-seven million, forty-three thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 53 65 104 106 130 212 260 265 424 449 520 530 689 898 1039 1060 1378 1796 2078 2120 2245 2756 3445 3592 4156 4490 5195 5512 5837 6890 8312 8980 10390 11674 13507 13780 17960 20780 23348 23797 27014 27560 29185 41560 46696 47594 54028 55067 58370 67535 95188 108056 110134 116740 118985 135070 190376 220268 233480 237970 270140 275335 309361 440536 466511 475940 540280 550670 618722 715871 933022 951880 1101340 1237444 1431742 1546805 1866044 2202680 2332555 2474888 2863484 3093610 3579355 3732088 4665110 5726968 6064643 6187220 7158710 9330220 12129286 12374440 14317420 18660440 24258572 24725083 28634840 30323215 48517144 49450166 60646430 98900332 121292860 123625415 197800664 242585720 247250830 321426079 494501660 642852158 989003320 1285704316 1607130395 2571408632 3214260790 6428521580 12857043160