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20102116160 = 265731289489
BaseRepresentation
bin10010101110001011…
…011111001101000000
31220212221200022021202
4102232023133031000
5312132120204120
613122414040332
71311102111440
oct225613371500
956787608252
1020102116160
118586136445
123a901a90a8
131b848ac6b9
14d89aa8120
157c9bdc875
hex4ae2df340

20102116160 has 112 divisors (see below), whose sum is σ = 56471393280. Its totient is φ = 6669803520.

The previous prime is 20102116121. The next prime is 20102116163. The reversal of 20102116160 is 6161120102.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×201021161602 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102116163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75305 + ... + 214184.

Almost surely, 220102116160 is an apocalyptic number.

20102116160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102116160 is an abundant number, since it is smaller than the sum of its proper divisors (36369277120).

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

20102116160 is a wasteful number, since it uses less digits than its factorization.

20102116160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289544 (or 289534 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 20102116160 its reverse (6161120102), we get a palindrome (26263236262).

The spelling of 20102116160 in words is "twenty billion, one hundred two million, one hundred sixteen thousand, one hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 31 32 35 40 56 62 64 70 80 112 124 140 155 160 217 224 248 280 310 320 434 448 496 560 620 868 992 1085 1120 1240 1736 1984 2170 2240 2480 3472 4340 4960 6944 8680 9920 13888 17360 34720 69440 289489 578978 1157956 1447445 2026423 2315912 2894890 4052846 4631824 5789780 8105692 8974159 9263648 10132115 11579560 16211384 17948318 18527296 20264230 23159120 32422768 35896636 40528460 44870795 46318240 62819113 64845536 71793272 81056920 89741590 92636480 125638226 129691072 143586544 162113840 179483180 251276452 287173088 314095565 324227680 358966360 502552904 574346176 628191130 648455360 717932720 1005105808 1256382260 1435865440 2010211616 2512764520 2871730880 4020423232 5025529040 10051058080 20102116160