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83725105160 = 23537433130649
BaseRepresentation
bin100110111111001100…
…1111011100000001000
322000002221120000121202
41031332121323200020
52332432111331120
6102243543323332
76022533436334
oct1157631734010
9260087500552
1083725105160
1132564703794
1214287450548
137b83b08758
1440a37b27c4
1522a0543875
hex137e67b808

83725105160 has 64 divisors (see below), whose sum is σ = 193921182000. Its totient is φ = 32509403136.

The previous prime is 83725105159. The next prime is 83725105169. The reversal of 83725105160 is 6150152738.

It can be written as a sum of positive squares in 8 ways, for example, as 53276949124 + 30448156036 = 230818^2 + 174494^2 .

It is not an unprimeable number, because it can be changed into a prime (83725105169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575516 + ... + 706164.

Almost surely, 283725105160 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83725105160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96960591000).

83725105160 is an abundant number, since it is smaller than the sum of its proper divisors (110196076840).

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

83725105160 is a wasteful number, since it uses less digits than its factorization.

83725105160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131130 (or 131126 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

Adding to 83725105160 its reverse (6150152738), we get a palindrome (89875257898).

The spelling of 83725105160 in words is "eighty-three billion, seven hundred twenty-five million, one hundred five thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 20 37 40 74 148 185 296 370 433 740 866 1480 1732 2165 3464 4330 8660 16021 17320 32042 64084 80105 128168 130649 160210 261298 320420 522596 640840 653245 1045192 1306490 2612980 4834013 5225960 9668026 19336052 24170065 38672104 48340130 56571017 96680260 113142034 193360520 226284068 282855085 452568136 565710170 1131420340 2093127629 2262840680 4186255258 8372510516 10465638145 16745021032 20931276290 41862552580 83725105160