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10201620660 = 22357211315449
BaseRepresentation
bin10011000000001000…
…00110000010110100
3222022222011000200020
421200010012002310
5131343103330120
64404144045140
7510543226200
oct114004060264
928288130606
1010201620660
114365604660
121b886037b0
13c676c133a
146cac47b00
153ea937640
hex2601060b4

10201620660 has 144 divisors (see below), whose sum is σ = 36248990400. Its totient is φ = 2119810560.

The previous prime is 10201620623. The next prime is 10201620691. The reversal of 10201620660 is 6602610201.

It is a self number, because there is not a number n which added to its sum of digits gives 10201620660.

It is a congruent number.

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, 125385 + ... + 190064.

It is an arithmetic number, because the mean of its divisors is an integer number (251729100).

Almost surely, 210201620660 is an apocalyptic number.

10201620660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10201620660 is an abundant number, since it is smaller than the sum of its proper divisors (26047369740).

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

10201620660 is a wasteful number, since it uses less digits than its factorization.

10201620660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315486 (or 315477 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The spelling of 10201620660 in words is "ten billion, two hundred one million, six hundred twenty thousand, six hundred sixty".

Divisors: 1 2 3 4 5 6 7 10 11 12 14 15 20 21 22 28 30 33 35 42 44 49 55 60 66 70 77 84 98 105 110 132 140 147 154 165 196 210 220 231 245 294 308 330 385 420 462 490 539 588 660 735 770 924 980 1078 1155 1470 1540 1617 2156 2310 2695 2940 3234 4620 5390 6468 8085 10780 16170 32340 315449 630898 946347 1261796 1577245 1892694 2208143 3154490 3469939 3785388 4416286 4731735 6308980 6624429 6939878 8832572 9463470 10409817 11040715 13248858 13879756 15457001 17349695 18926940 20819634 22081430 24289573 26497716 30914002 33122145 34699390 41639268 44162860 46371003 48579146 52049085 61828004 66244290 69398780 72868719 77285005 92742006 97158292 104098170 121447865 132488580 145737438 154570010 170027011 185484012 208196340 231855015 242895730 291474876 309140020 340054022 364343595 463710030 485791460 510081033 680108044 728687190 850135055 927420060 1020162066 1457374380 1700270110 2040324132 2550405165 3400540220 5100810330 10201620660