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18785363758364 = 2276186471271939
BaseRepresentation
bin1000100010101110011101…
…11011110000110100011100
32110111212022022002021122202
410101113032323300310130
54430234411110231424
6103541513232031032
73646124553225260
oct421271673606434
973455268067582
1018785363758364
115a92912120a85
122134890392478
13a635b5642628
1448d305d5c0a0
152289b528b2ae
hex1115ceef0d1c

18785363758364 has 48 divisors (see below), whose sum is σ = 38191087280640. Its totient is φ = 7917966682560.

The previous prime is 18785363758363. The next prime is 18785363758379. The reversal of 18785363758364 is 46385736358781.

It is a junction number, because it is equal to n+sod(n) for n = 18785363758291 and 18785363758300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18785363758361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14133107 + ... + 15405045.

It is an arithmetic number, because the mean of its divisors is an integer number (795647651680).

Almost surely, 218785363758364 is an apocalyptic number.

18785363758364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18785363758364 is an abundant number, since it is smaller than the sum of its proper divisors (19405723522276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18785363758364 is a wasteful number, since it uses less digits than its factorization.

18785363758364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280658 (or 1280656 counting only the distinct ones).

The product of its digits is 2438553600, while the sum is 74.

The spelling of 18785363758364 in words is "eighteen trillion, seven hundred eighty-five billion, three hundred sixty-three million, seven hundred fifty-eight thousand, three hundred sixty-four".

Divisors: 1 2 4 7 14 28 61 122 244 427 854 1708 8647 17294 34588 60529 121058 242116 527467 1054934 1271939 2109868 2543878 3692269 5087756 7384538 8903573 14769076 17807146 35614292 77588279 155176558 310353116 543117953 1086235906 2172471812 10998456533 21996913066 43993826132 76989195731 153978391462 307956782924 670905848513 1341811697026 2683623394052 4696340939591 9392681879182 18785363758364