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66144006706752 = 263613109053509
BaseRepresentation
bin11110000101000010110100…
…00001100001011001000000
322200012022020112221202000000
433002201122001201121000
532132200411204104002
6352402045345000000
716634514101314662
oct1702413201413100
9280168215852000
1066144006706752
111a091574462797
12750319a023000
132aba4788cc570
14124955bd32532
1579a8563a961c
hex3c285a061640

66144006706752 has 196 divisors, whose sum is σ = 211929574872540. Its totient is φ = 20352001876992.

The previous prime is 66144006706733. The next prime is 66144006706829. The reversal of 66144006706752 is 25760760044166.

66144006706752 is a `hidden beast` number, since 6 + 61 + 4 + 400 + 6 + 70 + 67 + 52 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 32593777137216 + 33550229569536 = 5709096^2 + 5792256^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 53920227 + ... + 55133282.

Almost surely, 266144006706752 is an apocalyptic number.

It is an amenable number.

66144006706752 is an abundant number, since it is smaller than the sum of its proper divisors (145785568165788).

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

66144006706752 is a wasteful number, since it uses less digits than its factorization.

66144006706752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109053552 (or 109053527 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 54.

The spelling of 66144006706752 in words is "sixty-six trillion, one hundred forty-four billion, six million, seven hundred six thousand, seven hundred fifty-two".