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18733998000807 = 322390502405801
BaseRepresentation
bin1000100001001110110010…
…10010111100101010100111
32110022221201112100102212200
410100213121102330222213
54423414211442011212
6103502140241345543
73642325635415125
oct420473122745247
973287645312780
1018733998000807
115a73053528081
1221269360382b3
13a5b7ba95314b
1448aa320b0915
152274aaa676dc
hex1109d94bcaa7

18733998000807 has 12 divisors (see below), whose sum is σ = 28236750610224. Its totient is φ = 11946317565600.

The previous prime is 18733998000733. The next prime is 18733998000811. The reversal of 18733998000807 is 70800089933781.

It is not a de Polignac number, because 18733998000807 - 28 = 18733998000551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18733998000857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45251202694 + ... + 45251203107.

It is an arithmetic number, because the mean of its divisors is an integer number (2353062550852).

Almost surely, 218733998000807 is an apocalyptic number.

18733998000807 is a deficient number, since it is larger than the sum of its proper divisors (9502752609417).

18733998000807 is a wasteful number, since it uses less digits than its factorization.

18733998000807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90502405830 (or 90502405827 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 18733998000807 in words is "eighteen trillion, seven hundred thirty-three billion, nine hundred ninety-eight million, eight hundred seven", and thus it is an aban number.

Divisors: 1 3 9 23 69 207 90502405801 271507217403 814521652209 2081555333423 6244666000269 18733998000807