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71710086160 = 2453532539309
BaseRepresentation
bin100001011001001000…
…0010001010000010000
320212002121011211002001
41002302100101100100
52133330240224120
652535420003344
75116020450406
oct1026220212020
9225077154061
1071710086160
1128459524119
1211a93690554
1369ba815a5b
143683ba5476
151cea807e0a
hex10b2411410

71710086160 has 40 divisors (see below), whose sum is σ = 167198327640. Its totient is φ = 28602765312.

The previous prime is 71710086157. The next prime is 71710086167. The reversal of 71710086160 is 6168001717.

It can be written as a sum of positive squares in 4 ways, for example, as 6106484736 + 65603601424 = 78144^2 + 256132^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (71710086167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1241415 + ... + 1297894.

It is an arithmetic number, because the mean of its divisors is an integer number (4179958191).

Almost surely, 271710086160 is an apocalyptic number.

It is an amenable number.

71710086160 is an abundant number, since it is smaller than the sum of its proper divisors (95488241480).

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

71710086160 is a wasteful number, since it uses less digits than its factorization.

71710086160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539675 (or 2539669 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 37.

Adding to 71710086160 its reverse (6168001717), we get a palindrome (77878087877).

The spelling of 71710086160 in words is "seventy-one billion, seven hundred ten million, eighty-six thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 353 706 1412 1765 2824 3530 5648 7060 14120 28240 2539309 5078618 10157236 12696545 20314472 25393090 40628944 50786180 101572360 203144720 896376077 1792752154 3585504308 4481880385 7171008616 8963760770 14342017232 17927521540 35855043080 71710086160