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18001063353 = 37131931111949
BaseRepresentation
bin10000110000111100…
…100110110110111001
31201110112011202200010
4100300330212312321
5243331233011403
612134121132133
71205040341160
oct206074466671
951415152603
1018001063353
1176a8149369
1235a462a049
13190b5135a0
14c2aa263d7
15705518603
hex430f26db9

18001063353 has 64 divisors (see below), whose sum is σ = 32098304000. Its totient is φ = 8705076480.

The previous prime is 18001063331. The next prime is 18001063363. The reversal of 18001063353 is 35336010081.

It is not a de Polignac number, because 18001063353 - 213 = 18001055161 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18001063353.

It is not an unprimeable number, because it can be changed into a prime (18001063363) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 104823 + ... + 216771.

It is an arithmetic number, because the mean of its divisors is an integer number (501536000).

Almost surely, 218001063353 is an apocalyptic number.

18001063353 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18001063353 is a deficient number, since it is larger than the sum of its proper divisors (14097240647).

18001063353 is a wasteful number, since it uses less digits than its factorization.

18001063353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112022.

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 18001063353 in words is "eighteen billion, one million, sixty-three thousand, three hundred fifty-three".

Divisors: 1 3 7 13 19 21 31 39 57 91 93 133 217 247 273 399 403 589 651 741 1209 1729 1767 2821 4123 5187 7657 8463 12369 22971 53599 111949 160797 335847 783643 1455337 2127031 2350929 3470419 4366011 6381093 10187359 10411257 14889217 24292933 27651403 30562077 44667651 45115447 65937961 72878799 82954209 135346341 193559821 197813883 315808129 461565727 580679463 857193493 947424387 1384697181 2571580479 6000354451 18001063353