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18064232673 = 331701327697
BaseRepresentation
bin10000110100101101…
…100101000011100001
31201121221001002200120
4100310231211003201
5243443420421143
612144255110453
71206435305244
oct206455450341
951557032616
1018064232673
11772a874413
123601812429
13191b62cc96
14c3518b25b
1570ad45383
hex434b650e1

18064232673 has 16 divisors (see below), whose sum is σ = 24867042816. Its totient is φ = 11652261120.

The previous prime is 18064232663. The next prime is 18064232677. The reversal of 18064232673 is 37623246081.

It is not a de Polignac number, because 18064232673 - 26 = 18064232609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18064232677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 638361 + ... + 666057.

It is an arithmetic number, because the mean of its divisors is an integer number (1554190176).

Almost surely, 218064232673 is an apocalyptic number.

It is an amenable number.

18064232673 is a deficient number, since it is larger than the sum of its proper divisors (6802810143).

18064232673 is a wasteful number, since it uses less digits than its factorization.

18064232673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34744.

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 18064232673 in words is "eighteen billion, sixty-four million, two hundred thirty-two thousand, six hundred seventy-three".

Divisors: 1 3 31 93 7013 21039 27697 83091 217403 652209 858607 2575821 194239061 582717183 6021410891 18064232673