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68177343768 = 2337338914009
BaseRepresentation
bin111111011111101011…
…111011010100011000
320111222101200220120020
4333133223323110120
52104111400000033
651153101030440
74632332601042
oct773753732430
9214871626506
1068177343768
1126a06373506
1211268555420
136576954141
14342a922a92
151b905ce6b3
hexfdfafb518

68177343768 has 32 divisors (see below), whose sum is σ = 172778204400. Its totient is φ = 22414468608.

The previous prime is 68177343737. The next prime is 68177343803. The reversal of 68177343768 is 86734377186.

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, 19455253 + ... + 19458756.

Almost surely, 268177343768 is an apocalyptic number.

It is an amenable number.

68177343768 is an abundant number, since it is smaller than the sum of its proper divisors (104600860632).

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

68177343768 is a wasteful number, since it uses less digits than its factorization.

68177343768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38914091 (or 38914087 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 60.

The spelling of 68177343768 in words is "sixty-eight billion, one hundred seventy-seven million, three hundred forty-three thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 24 73 146 219 292 438 584 876 1752 38914009 77828018 116742027 155656036 233484054 311312072 466968108 933936216 2840722657 5681445314 8522167971 11362890628 17044335942 22725781256 34088671884 68177343768