Base | Representation |
---|---|
bin | 10110100110000111… |
… | …10000101101000011 |
3 | 1011022102110020100110 |
4 | 23103003300231003 |
5 | 144321003204331 |
6 | 5323423322403 |
7 | 606421026363 |
oct | 132303605503 |
9 | 34272406313 |
10 | 12130913091 |
11 | 5165647610 |
12 | 2426750403 |
13 | 11b430caab |
14 | 8311789a3 |
15 | 4aeece946 |
hex | 2d30f0b43 |
12130913091 has 16 divisors (see below), whose sum is σ = 18682904448. Its totient is φ = 6919593600.
The previous prime is 12130913059. The next prime is 12130913117. The reversal of 12130913091 is 19031903121.
It is a happy number.
It is not a de Polignac number, because 12130913091 - 25 = 12130913059 is a prime.
It is not an unprimeable number, because it can be changed into a prime (12130913021) 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, 10811305 + ... + 10812426.
It is an arithmetic number, because the mean of its divisors is an integer number (1167681528).
Almost surely, 212130913091 is an apocalyptic number.
12130913091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
12130913091 is a deficient number, since it is larger than the sum of its proper divisors (6551991357).
12130913091 is a wasteful number, since it uses less digits than its factorization.
12130913091 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 21623762.
The product of its (nonzero) digits is 1458, while the sum is 30.
The spelling of 12130913091 in words is "twelve billion, one hundred thirty million, nine hundred thirteen thousand, ninety-one".
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