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18479129075 = 5211217335311
BaseRepresentation
bin10001001101011100…
…010010000111110011
31202200211202000112222
4101031130102013303
5300321124112300
612253355511255
71222634001611
oct211534220763
952624660488
1018479129075
117922a94200
1236b875852b
131986588a04
14c7430c6b1
1573249c785
hex44d7121f3

18479129075 has 36 divisors (see below), whose sum is σ = 25332899424. Its totient is φ = 13361304000.

The previous prime is 18479129051. The next prime is 18479129093. The reversal of 18479129075 is 57092197481.

It is not a de Polignac number, because 18479129075 - 216 = 18479063539 is a prime.

It is a super-2 number, since 2×184791290752 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 505670 + ... + 540980.

Almost surely, 218479129075 is an apocalyptic number.

18479129075 is a deficient number, since it is larger than the sum of its proper divisors (6853770349).

18479129075 is a wasteful number, since it uses less digits than its factorization.

18479129075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35516 (or 35500 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 53.

The spelling of 18479129075 in words is "eighteen billion, four hundred seventy-nine million, one hundred twenty-nine thousand, seventy-five".

Divisors: 1 5 11 25 55 121 173 275 605 865 1903 3025 4325 9515 20933 35311 47575 104665 176555 388421 523325 882775 1942105 4272631 6108803 9710525 21363155 30544015 67196833 106815775 152720075 335984165 739165163 1679920825 3695825815 18479129075