Base | Representation |
---|---|
bin | 111100111100010001… |
… | …1011110101001101001 |
3 | 110111210122222101000000 |
4 | 1321320203132221221 |
5 | 4121011111213020 |
6 | 140042132133213 |
7 | 12312056056422 |
oct | 1717043365151 |
9 | 414718871000 |
10 | 130871585385 |
11 | 50558664132 |
12 | 21444767209 |
13 | c45862ca28 |
14 | 649714a649 |
15 | 360e62b090 |
hex | 1e788dea69 |
130871585385 has 28 divisors (see below), whose sum is σ = 235461147012. Its totient is φ = 69798176928.
The previous prime is 130871585357. The next prime is 130871585407. The reversal of 130871585385 is 583585178031.
130871585385 is a `hidden beast` number, since 1 + 30 + 8 + 71 + 5 + 8 + 538 + 5 = 666.
It can be written as a sum of positive squares in 2 ways, for example, as 25264784601 + 105606800784 = 158949^2 + 324972^2 .
It is not a de Polignac number, because 130871585385 - 212 = 130871581289 is a prime.
It is a super-2 number, since 2×1308715853852 (a number of 23 digits) contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 17948562 + ... + 17955851.
It is an arithmetic number, because the mean of its divisors is an integer number (8409326679).
Almost surely, 2130871585385 is an apocalyptic number.
130871585385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
130871585385 is a deficient number, since it is larger than the sum of its proper divisors (104589561627).
130871585385 is an frugal number, since it uses more digits than its factorization.
130871585385 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 35904436 (or 35904421 counting only the distinct ones).
The product of its (nonzero) digits is 4032000, while the sum is 54.
The spelling of 130871585385 in words is "one hundred thirty billion, eight hundred seventy-one million, five hundred eighty-five thousand, three hundred eighty-five".
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