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75471754717 = 281712137717
BaseRepresentation
bin100011001001001110…
…1111001010111011101
321012210202102101020201
41012102131321113131
52214031232122332
654400553343501
75311155221212
oct1062235712735
9235722371221
1075471754717
112a009924407
1212763407b91
137169c4bc38
14391d5d9b09
151e6aba15e7
hex11927795dd

75471754717 has 8 divisors (see below), whose sum is σ = 75752982072. Its totient is φ = 75190617600.

The previous prime is 75471754601. The next prime is 75471754733. The reversal of 75471754717 is 71745717457.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18091864036 + 57379890681 = 134506^2 + 239541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-75471754717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75471754417) 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, 1982143 + ... + 2019859.

It is an arithmetic number, because the mean of its divisors is an integer number (9469122759).

Almost surely, 275471754717 is an apocalyptic number.

It is an amenable number.

75471754717 is a deficient number, since it is larger than the sum of its proper divisors (281227355).

75471754717 is a wasteful number, since it uses less digits than its factorization.

75471754717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45119.

The product of its digits is 6722800, while the sum is 55.

The spelling of 75471754717 in words is "seventy-five billion, four hundred seventy-one million, seven hundred fifty-four thousand, seven hundred seventeen".

Divisors: 1 281 7121 37717 2001001 10598477 268582757 75471754717