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53868355780 = 225194323314149
BaseRepresentation
bin110010001010110011…
…011110000011000100
312011001011211000011011
4302022303132003010
51340310244341110
640425145452004
73614623316641
oct621263360304
9164034730134
1053868355780
1120933311aa8
12a5344a1004
13510631b445
1428703b6dc8
1516042b448a
hexc8acde0c4

53868355780 has 96 divisors (see below), whose sum is σ = 122378256000. Its totient is φ = 19851568128.

The previous prime is 53868355771. The next prime is 53868355811. The reversal of 53868355780 is 8755386835.

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, 3800146 + ... + 3814294.

It is an arithmetic number, because the mean of its divisors is an integer number (1274773500).

Almost surely, 253868355780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53868355780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61189128000).

53868355780 is an abundant number, since it is smaller than the sum of its proper divisors (68509900220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53868355780 is a wasteful number, since it uses less digits than its factorization.

53868355780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14453 (or 14451 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 58.

The spelling of 53868355780 in words is "fifty-three billion, eight hundred sixty-eight million, three hundred fifty-five thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 19 20 38 43 76 86 95 172 190 215 233 380 430 466 817 860 932 1165 1634 2330 3268 4085 4427 4660 8170 8854 10019 14149 16340 17708 20038 22135 28298 40076 44270 50095 56596 70745 88540 100190 141490 190361 200380 268831 282980 380722 537662 608407 761444 951805 1075324 1216814 1344155 1903610 2433628 2688310 3042035 3296717 3807220 5376620 6084070 6593434 11559733 12168140 13186868 16483585 23119466 32967170 46238932 57798665 62637623 65934340 115597330 125275246 141758831 231194660 250550492 283517662 313188115 567035324 626376230 708794155 1252752460 1417588310 2693417789 2835176620 5386835578 10773671156 13467088945 26934177890 53868355780