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71474747910 = 23518116078191
BaseRepresentation
bin100001010010000111…
…0100001101000000110
320211111012100101200120
41002210032201220012
52132340013413120
652500211522410
75110132222146
oct1024416415006
9224435311616
1071474747910
11283486a4aa5
1211a288b9406
136980b37a57
143660824926
151cd4d1d140
hex10a43a1a06

71474747910 has 64 divisors (see below), whose sum is σ = 172615532544. Its totient is φ = 18940521600.

The previous prime is 71474747893. The next prime is 71474747921. The reversal of 71474747910 is 1974747417.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8721915 + ... + 8730105.

It is an arithmetic number, because the mean of its divisors is an integer number (2697117696).

Almost surely, 271474747910 is an apocalyptic number.

71474747910 is an abundant number, since it is smaller than the sum of its proper divisors (101140784634).

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

71474747910 is a wasteful number, since it uses less digits than its factorization.

71474747910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9989.

The product of its (nonzero) digits is 1382976, while the sum is 51.

The spelling of 71474747910 in words is "seventy-one billion, four hundred seventy-four million, seven hundred forty-seven thousand, nine hundred ten".

Divisors: 1 2 3 5 6 10 15 30 181 362 543 905 1086 1607 1810 2715 3214 4821 5430 8035 8191 9642 16070 16382 24105 24573 40955 48210 49146 81910 122865 245730 290867 581734 872601 1454335 1482571 1745202 2908670 2965142 4363005 4447713 7412855 8726010 8895426 13162937 14825710 22238565 26325874 39488811 44477130 65814685 78977622 131629370 197444055 394888110 2382491597 4764983194 7147474791 11912457985 14294949582 23824915970 35737373955 71474747910