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68174347220 = 2257486959623
BaseRepresentation
bin111111011111100000…
…011111101111010100
320111222012001200001222
4333133200133233110
52104110113102340
651152512505512
74632265250540
oct773740375724
9214865050058
1068174347220
1126a04707121
121126754b298
136576145235
14342a382a20
151b901db8b5
hexfdf81fbd4

68174347220 has 24 divisors (see below), whose sum is σ = 163618433664. Its totient is φ = 23374061856.

The previous prime is 68174347207. The next prime is 68174347253. The reversal of 68174347220 is 2274347186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243479672 + ... + 243479951.

It is an arithmetic number, because the mean of its divisors is an integer number (6817434736).

Almost surely, 268174347220 is an apocalyptic number.

It is an amenable number.

68174347220 is an abundant number, since it is smaller than the sum of its proper divisors (95444086444).

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

68174347220 is a wasteful number, since it uses less digits than its factorization.

68174347220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486959639 (or 486959637 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 68174347220 in words is "sixty-eight billion, one hundred seventy-four million, three hundred forty-seven thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 486959623 973919246 1947838492 2434798115 3408717361 4869596230 6817434722 9739192460 13634869444 17043586805 34087173610 68174347220