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152911105312729 = 412109227672
BaseRepresentation
bin100010110001001001100100…
…000111010100011111011001
3202001102011021211201001202211
4202301021210013110133121
5130020243420430001404
61301114220401555121
744131314510505141
oct4261114407243731
9661364254631684
10152911105312729
11447a4265623745
1215197243945aa1
1367425bc56773a
1429a8d19137921
1512a287e87bb04
hex8b12641d47d9

152911105312729 has 27 divisors (see below), whose sum is σ = 158239893535101. Its totient is φ = 147759508013760.

The previous prime is 152911105312723. The next prime is 152911105312759. The reversal of 152911105312729 is 927213501119251.

The square root of 152911105312729 is 12365723.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 19137361389129 + 133773743923600 = 4374627^2 + 11566060^2 .

It is not a de Polignac number, because 152911105312729 - 213 = 152911105304537 is a prime.

It is a super-2 number, since 2×1529111053127292 (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152911105312723) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 55262414704 + ... + 55262417470.

Almost surely, 2152911105312729 is an apocalyptic number.

152911105312729 is the 12365723-rd square number.

152911105312729 is the 6182862-nd centered octagonal number.

It is an amenable number.

152911105312729 is a deficient number, since it is larger than the sum of its proper divisors (5328788222372).

152911105312729 is an frugal number, since it uses more digits than its factorization.

152911105312729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5834 (or 2917 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 49.

The spelling of 152911105312729 in words is "one hundred fifty-two trillion, nine hundred eleven billion, one hundred five million, three hundred twelve thousand, seven hundred twenty-nine".

Divisors: 1 41 109 1681 2767 4469 11881 113447 183229 301603 487121 4651327 7656289 12365723 19971961 32874727 313907849 506994643 834535501 1347863807 12870221809 34215955541 55262416087 90964369609 1402854177181 3729539153969 152911105312729