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71100222011 = 731389179161
BaseRepresentation
bin100001000110111100…
…1110100101000111011
320210112002121111201222
41002031321310220323
52131103124101021
652355112302255
75064633626000
oct1021571645073
9223462544658
1071100222011
1128176249165
12119433a198b
1369213753b0
143626bb18a7
151cb1edc6ab
hex108de74a3b

71100222011 has 32 divisors (see below), whose sum is σ = 90297648000. Its totient is φ = 55622730240.

The previous prime is 71100221921. The next prime is 71100222041. The reversal of 71100222011 is 11022200117.

It is a de Polignac number, because none of the positive numbers 2k-71100222011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71100222041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307271 + ... + 486431.

It is an arithmetic number, because the mean of its divisors is an integer number (2821801500).

Almost surely, 271100222011 is an apocalyptic number.

71100222011 is a deficient number, since it is larger than the sum of its proper divisors (19197425989).

71100222011 is a wasteful number, since it uses less digits than its factorization.

71100222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179284 (or 179270 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 71100222011 its reverse (11022200117), we get a palindrome (82122422128).

The spelling of 71100222011 in words is "seventy-one billion, one hundred million, two hundred twenty-two thousand, eleven".

Divisors: 1 7 13 49 89 91 343 623 637 1157 4361 4459 8099 30527 56693 179161 396851 1254127 2329093 8778889 15945329 16303651 61452223 111617303 114125557 207289277 781321121 798878899 1451024939 5469247847 10157174573 71100222011