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21530424123152 = 2471719595157677
BaseRepresentation
bin1001110010100111100010…
…10010000001111100010000
32211020021210021110020100022
410321103301102001330100
510310223302033420102
6113442535034243012
74351343660311640
oct471236122017420
984207707406308
1021530424123152
11695100213645a
1224b88a7586468
13c024058cba79
145461143b6520
152750c81d55a2
hex1394f1481f10

21530424123152 has 80 divisors (see below), whose sum is σ = 53135677491840. Its totient is φ = 8227459713024.

The previous prime is 21530424123151. The next prime is 21530424123179. The reversal of 21530424123152 is 25132142403512.

It is not an unprimeable number, because it can be changed into a prime (21530424123151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297542663 + ... + 297615014.

It is an arithmetic number, because the mean of its divisors is an integer number (664195968648).

Almost surely, 221530424123152 is an apocalyptic number.

It is an amenable number.

21530424123152 is an abundant number, since it is smaller than the sum of its proper divisors (31605253368688).

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

21530424123152 is a wasteful number, since it uses less digits than its factorization.

21530424123152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595157728 (or 595157722 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 21530424123152 its reverse (25132142403512), we get a palindrome (46662566526664).

The spelling of 21530424123152 in words is "twenty-one trillion, five hundred thirty billion, four hundred twenty-four million, one hundred twenty-three thousand, one hundred fifty-two".

Divisors: 1 2 4 7 8 14 16 17 19 28 34 38 56 68 76 112 119 133 136 152 238 266 272 304 323 476 532 646 952 1064 1292 1904 2128 2261 2584 4522 5168 9044 18088 36176 595157677 1190315354 2380630708 4166103739 4761261416 8332207478 9522522832 10117680509 11307995863 16664414956 20235361018 22615991726 33328829912 40470722036 45231983452 66657659824 70823763563 79155971041 80941444072 90463966904 141647527126 158311942082 161882888144 180927933808 192235929671 283295054252 316623884164 384471859342 566590108504 633247768328 768943718684 1133180217008 1266495536656 1345651507697 1537887437368 2691303015394 3075774874736 5382606030788 10765212061576 21530424123152