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71069715165 = 35137157220279
BaseRepresentation
bin100001000110000010…
…1011100101011011101
320210102222012121012210
41002030011130223131
52131022321341130
652352102351033
75064113416521
oct1021405345335
9223388177183
1071069715165
1128160001999
121193512b479
136917c537c7
143622b0dd81
151cae4b35b0
hex108c15cadd

71069715165 has 32 divisors (see below), whose sum is σ = 115271642880. Its totient is φ = 37387344384.

The previous prime is 71069715163. The next prime is 71069715169. The reversal of 71069715165 is 56151796017.

It is not a de Polignac number, because 71069715165 - 21 = 71069715163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71069715161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212496 + ... + 432774.

It is an arithmetic number, because the mean of its divisors is an integer number (3602238840).

Almost surely, 271069715165 is an apocalyptic number.

It is an amenable number.

71069715165 is a deficient number, since it is larger than the sum of its proper divisors (44201927715).

71069715165 is a wasteful number, since it uses less digits than its factorization.

71069715165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220581.

The product of its (nonzero) digits is 396900, while the sum is 48.

The spelling of 71069715165 in words is "seventy-one billion, sixty-nine million, seven hundred fifteen thousand, one hundred sixty-five".

Divisors: 1 3 5 15 137 157 411 471 685 785 2055 2355 21509 64527 107545 220279 322635 660837 1101395 3304185 30178223 34583803 90534669 103751409 150891115 172919015 452673345 518757045 4737981011 14213943033 23689905055 71069715165