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18330688311 = 3131719432787
BaseRepresentation
bin10001000100100110…
…000001101100110111
31202022111102110002220
4101010212001230313
5300020124011221
612230534133423
71216152164655
oct210446015467
952274373086
1018330688311
117857217491
123676ab1273
1319618b4740
14c5c70bdd5
1572442a0c6
hex444981b37

18330688311 has 96 divisors (see below), whose sum is σ = 30072349440. Its totient is φ = 9811694592.

The previous prime is 18330688303. The next prime is 18330688351. The reversal of 18330688311 is 11388603381.

It is not a de Polignac number, because 18330688311 - 23 = 18330688303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18330688351) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23291460 + ... + 23292246.

It is an arithmetic number, because the mean of its divisors is an integer number (313253640).

Almost surely, 218330688311 is an apocalyptic number.

18330688311 is a deficient number, since it is larger than the sum of its proper divisors (11741661129).

18330688311 is a wasteful number, since it uses less digits than its factorization.

18330688311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 18330688311 in words is "eighteen billion, three hundred thirty million, six hundred eighty-eight thousand, three hundred eleven".

Divisors: 1 3 13 17 19 39 43 51 57 129 221 247 323 559 663 731 741 787 817 969 1677 1849 2193 2361 2451 4199 5547 9503 10231 10621 12597 13379 13889 14953 24037 28509 30693 31433 31863 33841 35131 40137 41667 44859 72111 94299 101523 105393 173927 180557 194389 254201 408629 439933 456703 521781 541671 575297 583167 597227 642979 762603 1225887 1319799 1370109 1455163 1725891 1791681 1928937 3304613 4365489 7478861 7763951 8358727 9913839 10930643 18917119 22436583 23291853 24737771 25076181 27648097 32791929 56751357 74213313 82944291 142098359 321591023 359425261 426295077 470017649 964773069 1078275783 1410052947 6110229437 18330688311