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68001183140 = 22511232584303
BaseRepresentation
bin111111010101001011…
…111011010110100100
320111112010020000121112
4333111023323112210
52103231300330030
651123405204152
74625063343152
oct772513732644
9214463200545
1068001183140
1126925993410
1211219560658
1365492c5997
1434113883d2
151b7edd3a95
hexfd52fb5a4

68001183140 has 72 divisors (see below), whose sum is σ = 162852536448. Its totient is φ = 23652544960.

The previous prime is 68001183139. The next prime is 68001183169. The reversal of 68001183140 is 4138110086.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 68001183097 and 68001183106.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175772 + ... + 408531.

It is an arithmetic number, because the mean of its divisors is an integer number (2261840784).

Almost surely, 268001183140 is an apocalyptic number.

It is an amenable number.

68001183140 is an abundant number, since it is smaller than the sum of its proper divisors (94851353308).

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

68001183140 is a wasteful number, since it uses less digits than its factorization.

68001183140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584369 (or 584344 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 68001183140 in words is "sixty-eight billion, one million, one hundred eighty-three thousand, one hundred forty".

Divisors: 1 2 4 5 10 11 20 22 23 44 46 55 92 110 115 220 230 253 460 506 529 1012 1058 1265 2116 2530 2645 5060 5290 5819 10580 11638 23276 29095 58190 116380 584303 1168606 2337212 2921515 5843030 6427333 11686060 12854666 13438969 25709332 26877938 32136665 53755876 64273330 67194845 128546660 134389690 147828659 268779380 295657318 309096287 591314636 618192574 739143295 1236385148 1478286590 1545481435 2956573180 3090962870 3400059157 6181925740 6800118314 13600236628 17000295785 34000591570 68001183140