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57136161888 = 2533135086909
BaseRepresentation
bin110101001101100101…
…001010010001100000
312110110220202202102000
4311031211022101200
51414003324140023
642125322124000
74061613235311
oct651545122140
9173426682360
1057136161888
112225a968103
12b0a6950600
13550733b020
142aa03b2608
151746108243
hexd4d94a460

57136161888 has 96 divisors (see below), whose sum is σ = 179466184800. Its totient is φ = 17580354048.

The previous prime is 57136161881. The next prime is 57136161899. The reversal of 57136161888 is 88816163175.

57136161888 is a `hidden beast` number, since 5 + 7 + 1 + 3 + 616 + 18 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57136161881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2532223 + ... + 2554686.

It is an arithmetic number, because the mean of its divisors is an integer number (1869439425).

Almost surely, 257136161888 is an apocalyptic number.

It is an amenable number.

57136161888 is an abundant number, since it is smaller than the sum of its proper divisors (122330022912).

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

57136161888 is a wasteful number, since it uses less digits than its factorization.

57136161888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5086941 (or 5086927 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

It can be divided in two parts, 57136 and 161888, that added together give a square (219024 = 4682).

The spelling of 57136161888 in words is "fifty-seven billion, one hundred thirty-six million, one hundred sixty-one thousand, eight hundred eighty-eight".

Divisors: 1 2 3 4 6 8 9 12 13 16 18 24 26 27 32 36 39 48 52 54 72 78 96 104 108 117 144 156 208 216 234 288 312 351 416 432 468 624 702 864 936 1248 1404 1872 2808 3744 5616 11232 5086909 10173818 15260727 20347636 30521454 40695272 45782181 61042908 66129817 81390544 91564362 122085816 132259634 137346543 162781088 183128724 198389451 244171632 264519268 274693086 366257448 396778902 488343264 529038536 549386172 595168353 732514896 793557804 1058077072 1098772344 1190336706 1465029792 1587115608 1785505059 2116154144 2197544688 2380673412 3174231216 3571010118 4395089376 4761346824 6348462432 7142020236 9522693648 14284040472 19045387296 28568080944 57136161888