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17243114491 = 18913911707
BaseRepresentation
bin10000000011110001…
…010000101111111011
31122111200221222022001
4100003301100233323
5240303214130431
611531003441431
71150205024551
oct200361205773
948450858261
1017243114491
11734931a149
123412826277
13181a494a35
14b980c5bd1
156adbeae61
hex403c50bfb

17243114491 has 4 divisors (see below), whose sum is σ = 17244045112. Its totient is φ = 17242183872.

The previous prime is 17243114489. The next prime is 17243114503. The reversal of 17243114491 is 19441134271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19441134271 = 131495471867.

It is a cyclic number.

It is not a de Polignac number, because 17243114491 - 21 = 17243114489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17243114491.

It is not an unprimeable number, because it can be changed into a prime (17243114591) 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 3 ways as a sum of consecutive naturals, for example, 436941 + ... + 474766.

It is an arithmetic number, because the mean of its divisors is an integer number (4311011278).

Almost surely, 217243114491 is an apocalyptic number.

17243114491 is a deficient number, since it is larger than the sum of its proper divisors (930621).

17243114491 is an equidigital number, since it uses as much as digits as its factorization.

17243114491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930620.

The product of its digits is 24192, while the sum is 37.

The spelling of 17243114491 in words is "seventeen billion, two hundred forty-three million, one hundred fourteen thousand, four hundred ninety-one".

Divisors: 1 18913 911707 17243114491