Base | Representation |
---|---|
bin | 10110101101001010… |
… | …11110000101101001 |
3 | 1011110112210021222202 |
4 | 23112211132011221 |
5 | 144431130101020 |
6 | 5333335425545 |
7 | 611036660606 |
oct | 132645360551 |
9 | 34415707882 |
10 | 12190081385 |
11 | 5195a8a629 |
12 | 24425252b5 |
13 | 11c3658311 |
14 | 838d7b6ad |
15 | 4b52bae75 |
hex | 2d695e169 |
12190081385 has 16 divisors (see below), whose sum is σ = 14670658560. Its totient is φ = 9723732480.
The previous prime is 12190081369. The next prime is 12190081399. The reversal of 12190081385 is 58318009121.
It is not a de Polignac number, because 12190081385 - 24 = 12190081369 is a prime.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3845081 + ... + 3848249.
It is an arithmetic number, because the mean of its divisors is an integer number (916916160).
Almost surely, 212190081385 is an apocalyptic number.
It is an amenable number.
12190081385 is a deficient number, since it is larger than the sum of its proper divisors (2480577175).
12190081385 is a wasteful number, since it uses less digits than its factorization.
12190081385 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5168.
The product of its (nonzero) digits is 17280, while the sum is 38.
The spelling of 12190081385 in words is "twelve billion, one hundred ninety million, eighty-one thousand, three hundred eighty-five".
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