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68517211604 = 221779107199599
BaseRepresentation
bin111111110011111100…
…011010110111010100
320112212002012222120212
4333303330122313110
52110310401232404
651250521344552
74643630455262
oct776374326724
9215762188525
1068517211604
11270701a8216
1211342338158
1365cc1a057a
14345db13432
151bb036606e
hexff3f1add4

68517211604 has 96 divisors (see below), whose sum is σ = 130636800000. Its totient is φ = 31326856704.

The previous prime is 68517211591. The next prime is 68517211613. The reversal of 68517211604 is 40611271586.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114385697 + ... + 114386295.

It is an arithmetic number, because the mean of its divisors is an integer number (1360800000).

Almost surely, 268517211604 is an apocalyptic number.

It is an amenable number.

68517211604 is a deficient number, since it is larger than the sum of its proper divisors (62119588396).

68517211604 is a wasteful number, since it uses less digits than its factorization.

68517211604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005 (or 1003 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 68517211604 in words is "sixty-eight billion, five hundred seventeen million, two hundred eleven thousand, six hundred four".

Divisors: 1 2 4 17 34 68 79 107 158 199 214 316 398 428 599 796 1198 1343 1819 2396 2686 3383 3638 5372 6766 7276 8453 10183 13532 15721 16906 20366 21293 31442 33812 40732 42586 47321 62884 64093 85172 94642 119201 128186 143701 189284 238402 256372 267257 287402 361981 476804 534514 574804 723962 804457 1069028 1089581 1447924 1608914 1682147 2026417 2179162 3217828 3364294 4052834 4358324 5063347 6728588 8105668 9416879 10126694 12754507 18833758 20253388 25509014 28596499 37667516 51018028 57192998 86076899 114385996 160086943 172153798 216826619 320173886 344307596 433653238 640347772 867306476 1007606053 2015212106 4030424212 17129302901 34258605802 68517211604