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71447103245 = 5719107439253
BaseRepresentation
bin100001010001010010…
…1000100011100001101
320211102021022220100002
41002202211010130031
52132310424300440
652453343214045
75106345233360
oct1024245043415
9224367286302
1071447103245
1128334033171
1211a1b5a7325
1369781a8b6b
14365acaa0d7
151cd26ac115
hex10a294470d

71447103245 has 16 divisors (see below), whose sum is σ = 103141683840. Its totient is φ = 46413756864.

The previous prime is 71447103241. The next prime is 71447103257. The reversal of 71447103245 is 54230174417.

It is a cyclic number.

It is not a de Polignac number, because 71447103245 - 22 = 71447103241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71447103199 and 71447103208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71447103241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53718962 + ... + 53720291.

It is an arithmetic number, because the mean of its divisors is an integer number (6446355240).

Almost surely, 271447103245 is an apocalyptic number.

It is an amenable number.

71447103245 is a deficient number, since it is larger than the sum of its proper divisors (31694580595).

71447103245 is a wasteful number, since it uses less digits than its factorization.

71447103245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107439284.

The product of its (nonzero) digits is 94080, while the sum is 38.

The spelling of 71447103245 in words is "seventy-one billion, four hundred forty-seven million, one hundred three thousand, two hundred forty-five".

Divisors: 1 5 7 19 35 95 133 665 107439253 537196265 752074771 2041345807 3760373855 10206729035 14289420649 71447103245