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17834081385 = 352386949811
BaseRepresentation
bin10000100110111111…
…100111110001101001
31201000212222012110210
4100212333213301221
5243011011101020
612105354131333
71200642122241
oct204677476151
951025865423
1017834081385
11762196833a
123558720b49
1318b2a49ba3
14c1279ab21
156e5a323e0
hex426fe7c69

17834081385 has 16 divisors (see below), whose sum is σ = 28536298560. Its totient is φ = 9510920640.

The previous prime is 17834081371. The next prime is 17834081417. The reversal of 17834081385 is 58318043871.

It is a happy number.

It is not a de Polignac number, because 17834081385 - 217 = 17833950313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333130 + ... + 382940.

It is an arithmetic number, because the mean of its divisors is an integer number (1783518660).

Almost surely, 217834081385 is an apocalyptic number.

17834081385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

17834081385 is a deficient number, since it is larger than the sum of its proper divisors (10702217175).

17834081385 is a wasteful number, since it uses less digits than its factorization.

17834081385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73688.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 17834081385 in words is "seventeen billion, eight hundred thirty-four million, eighty-one thousand, three hundred eighty-five".

Divisors: 1 3 5 15 23869 49811 71607 119345 149433 249055 358035 747165 1188938759 3566816277 5944693795 17834081385