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68206843224 = 23321372870559
BaseRepresentation
bin111111100001011100…
…011101010101011000
320112001110012122012200
4333201130131111120
52104141422440344
651200033210200
74633141413222
oct774134352530
9215043178180
1068206843224
1126a20a91923
1211276400960
13657cab2340
143430801412
151b92eaa069
hexfe171d558

68206843224 has 48 divisors (see below), whose sum is σ = 198936628800. Its totient is φ = 20986720704.

The previous prime is 68206843223. The next prime is 68206843247. The reversal of 68206843224 is 42234860286.

68206843224 is a `hidden beast` number, since 6 + 8 + 206 + 8 + 432 + 2 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 68206843224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68206843223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36434344 + ... + 36436215.

It is an arithmetic number, because the mean of its divisors is an integer number (4144513100).

Almost surely, 268206843224 is an apocalyptic number.

It is an amenable number.

68206843224 is an abundant number, since it is smaller than the sum of its proper divisors (130729785576).

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

68206843224 is a wasteful number, since it uses less digits than its factorization.

68206843224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72870584 (or 72870577 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 45.

The spelling of 68206843224 in words is "sixty-eight billion, two hundred six million, eight hundred forty-three thousand, two hundred twenty-four".

Divisors: 1 2 3 4 6 8 9 12 13 18 24 26 36 39 52 72 78 104 117 156 234 312 468 936 72870559 145741118 218611677 291482236 437223354 582964472 655835031 874446708 947317267 1311670062 1748893416 1894634534 2623340124 2841951801 3789269068 5246680248 5683903602 7578538136 8525855403 11367807204 17051710806 22735614408 34103421612 68206843224