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18140100688 = 242143529051
BaseRepresentation
bin10000111001001110…
…111111100001010000
31201211012210121001001
4100321032333201100
5244122331210223
612200005151344
71211346211633
oct207116774120
951735717031
1018140100688
117769683156
1236230bb554
1319312746b8
14c41299c1a
1571282e9ad
hex4393bf850

18140100688 has 20 divisors (see below), whose sum is σ = 35162912128. Its totient is φ = 9065800800.

The previous prime is 18140100673. The next prime is 18140100691. The reversal of 18140100688 is 88600104181.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 230238 + ... + 298813.

Almost surely, 218140100688 is an apocalyptic number.

It is an amenable number.

18140100688 is a deficient number, since it is larger than the sum of its proper divisors (17022811440).

18140100688 is a wasteful number, since it uses less digits than its factorization.

18140100688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531202 (or 531196 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 37.

It can be divided in two parts, 18140 and 100688, that added together give a triangular number (118828 = T487).

The spelling of 18140100688 in words is "eighteen billion, one hundred forty million, one hundred thousand, six hundred eighty-eight".

Divisors: 1 2 4 8 16 2143 4286 8572 17144 34288 529051 1058102 2116204 4232408 8464816 1133756293 2267512586 4535025172 9070050344 18140100688